But the largest aquarium tanks are just a fraction of that volume. The giant Pacific octopus, like all species of octopus, have eight arms on top of which sit a bulbous ‘mantle’. Females then lay on average 200,000, but up to 400,000 eggs in a den and she tends them during a five to seven month incubation period. 3. Northern Pacific Ocean from Japan to Alaska and California. Overall the cake goes to Whale Sharks which are found in captivity … They are master escape artists. To order a copy for £17 (RRP £20) go to bookshop.theguardian.com or call 0330 … PDF | On Jan 1, 2006, M.S.Chandage and others published Breeding of Octopus in captivity | Find, read and cite all the research you need on ResearchGate It can be found from the intertidal zone down to 2,000 m (6,600 ft), and is best adapted to cold, oxygen-rich water. According to the Everything Octopus website, the juvenile will increase in weight by 5 percent daily until reaching full size. Cassius, an Australian saltwater crocodile (Crocodylus porosus), is the largest crocodile in captivity at 5.48 m (17 ft 11.75 in).The Australian saltwater crocodile is the largest and most fearsome of today's species. The ink is toxic and can be deadly to octopuses if confined to a small space with little current flow. For example the Sea World in San Diego will at times take in injured or orphaned whales for a short time. Captivity can provide some animals with better living conditions. Unfortunately, predators consume about 99 percent of the planktonic paralarvae and the other one percent survives.However, the one percent that survives the planktonic stage sinks to the bottom. This fact is important as the large-egged octopuses are much easier to rear. When threatened, octopuses can also cloud predators in black ink. The giant Pacific octopus (Enteroctopus dofleini, formerly also Octopus apollyon), also known as the North Pacific giant octopus, is a large marine cephalopod belonging to the genus Enteroctopus. The reality is that most species are smaller — much smaller. 1. This mating process takes approximately three to four hours. Would you like to receive an upcoming factual analysis of my poem "The Ninja Octopus"? The only member of this genus that deserves the common name "Giant octopus" is Enteroctopus dofleini. PDF | On Jan 1, 2006, M.S.Chandage and others published Breeding of Octopus in captivity | Find, read and cite all the research you need on ResearchGate This series will provide a quick and not comprehensive look at some of the most curious species and groups of cephalopods.. Today we are looking at the giant Pacific octopus, Enteroctopus dofleini.It is perhaps the largest species of octopus in the world.. The giant Pacific octopus (Enteroctopus dofleini, formerly also Octopus apollyon), also known as the North Pacific giant octopus, is a large marine cephalopod belonging to the genus Enteroctopus.Its spatial distribution includes the coastal North Pacific, along California, Oregon, Washington, British Columbia, Alaska, Russia, Japan, and Korean Peninsula. The giant Pacific octopus is considered the largest octopus species in the world and inhabits the northern Pacific Ocean off the United States up to Alaska and around Japan. The common octopus is not thought to be endangered numbers may even being going up in some areas due to the reduction … Be aware that the above two are often confused with juveniles of this species. Size. Researchers at Nueva Pescanova Group in Spain announced in July that 50 octopuses of the common variety (Octopus vulgaris) that were born in captivity in 2018 have matured. Each arm has about 250 suckers along two rows. When the subject of octopuses arises, it is important to remember that they have been in existence for a long time. But the giant Pacific octopus has been observed catching individuals up to 1.2 meters (4 feet) in length. In the dark of night, between Monday, March 17, and Tuesday, March 18, dozens of fully formed baby octopuses burst forth from their outsized eggs. biggest octopus in the world, ... Greek in origin, but never octopi.) The member of this genus that best embodies the common name "giant octopus" is Enteroctopus dofleini, which holds the record of being the world's largest octopus based on direct measurements of a 71 kilograms (157 pounds) individual, weighed live. The pygmy zebra octopus is a more recent addition to the roster. They are also quite good at getting into things. In May 2012, a giant Pacific octopus was observed capturing a seagull that landed on the surface of the water. An octopus's brain-to-body ratio is the largest of any invertebrate. Capturing a spiny dogfish is no mean task. http://ow.ly/HoEaH, Cephalopods, Crustaceans, & Other Shellfish, The eye-opening reason huge squid are invading the eastern Pacific, For thousands of Peruvian families, the road out of poverty is paved in squid, How fishermen and scientists joined forces to bring back Kyoto's snow crabs, Doomed by their beauty, nautiluses could be headed toward extinction, From rock bottom to rock lobster: How New Zealand fishermen helped bring back their famed “crayfish”, Oceana Reveals Mislabeling of Iconic Chesapeake Blue Crab. The common octopus, Octopus vulgaris, lays 100,000 to 500,000 small eggs that hatch into planktonic young. The giant Pacific octopus is the largest and longest living species of octopus. The hectocotylus is a modified arm used for the insertion of spermatophores and is typically more than a meter long. The Giant octopus is Enteroctopus, and one of its species is the largest octopus.There are four species: the North Pacific Giant Octopus (E. dofleini), the Southern Giant Octopus (Enteroctopus magnificus), E. megalocyathus, and E. zealandicus.. Overview. Primary and secondary defence mechanisms studied By Bob Jacobs. But the largest aquarium tanks are just a fraction of that volume. Newly hatched octopuses eat small organisms such as copepods, larval crabs and seastars. They can have an armspan of 25 feet and weigh up to 100 lbs. Now, scientists have figured figured out why this grim scenario happens. Even though these octopuses are still commercially fished in both North America and Japan for food and bait, populations have been naturally resilient so far. O. briareus, on the other hand, lays approximately 500 large eggs which hatch into benthic young (Sweeney 1992). Is this play? It hunts at night and uses its eight strong arms combined with suckers to capture its prey and hold it in place. During this time, dedicated mothers won’t venture out for food, and shortly after the young hatch, the mother will die. After it hatches from its egg, the rice-sized planktonic paralarva float to near the ocean surface and spend 30-90 days in this form. Occasionally an octopus will lay eggs in captivity. The main thing that prevents octopus farming at large scale is that the common octopus – Octopus vulgaris – is tough to feed in captivity, especially when first born. The main thing that prevents octopus farming at large scale is that the common octopus—Octopus vulgaris—is tough to feed in captivity, especially when first born. It can be found in the North Pacific, along California, Oregon, Washington, British Colombia, Alaska, Russia, the Korean Peninsula and Japan. On the other hand, there is some debate over the size of that individual. It has been observed to adapt a light, almost whitish color when sufficiently relaxed. Other sources, such as the Guinness World Records lists a 136 kg (300 pounds) individual with an arm span of 9.8 meters (32 feet). They’ve been known to grow to more than 150 pounds, but on average weigh approximately 45 to 65 pounds. (Previously, another octopus named Harry had escaped from the same tank and was found on a staircase.) The largest octopus is the Pacific Octopus. It is found wandering forth from caves and dens throughout the temperate intertidal zones up to depths of 2000 meters (6,600 feet). Female giant Pacific octopuses never leave their eggs during the brooding process and die shortly after from self-cannibalization.1. Sailors for the Sea developed the KELP (Kids Environmental Lesson Plans) program to create the next generation of ocean stewards. Octopus dens are engineered by a single octopus, but they can be reused by later generations and some species are co-occupied by male and female for a few hours. Ever so often you will find a larger whale in captivity but it is not the type of thing you will find staying there. Why do males have fewer suckers? They have been observed opening jars, playing with toys and recognizing individual people. Only the largest fish, such as the halibut and lingcod are any threat to the adults. The octopus is equipped with special pigment cells, called chromatophores, just below the surface of the skin that allow it to change color and blend in with rocky or coral-laden surroundings. Click here or below to download hands-on marine science activities for kids. Until the octopus becomes an adult, the creature is vulnerable. 1. The common octopus, Octopus vulgaris, lays 100,000 to 500,000 small eggs that hatch into planktonic young. Save my name, email, and website in this browser for the next time I comment. After mating both the female and the male experience programmed senescence. Morocco, for example, was once the largest octopus supplier in the world. species, Octopus maya, and attempts to farm octopus are un-der way in other parts of Latin America, including Chile. We will get to this modified arm in a moment. So, I hope you enjoyed our brief introduction to the giant Pacific octopus. Signup here! Keeping an octopus in your saltwater aquarium isn't as common as keeping other invertebrates. When the octopus reaches the deeper ocean levels, he begins to grow quickly. Five Veined Octopus Amphioctopus marginatus (Taki), collected from Vizhinjam Bay in the Thiruvananthapuram District of Kerala, India were kept in aquariums to study their behaviour in captivity. In captivity, towards the end, sometimes she'll tear off her own skin, and eat the tips of her own tentacles. Cephalopods have been around for a very long time, at least 500 million years or so! Adults feed on crabs, scallops, cockles, lobsters, clams, snails, fishes, other octopuses and even sharks such as the spiny dogfish. Keeping animals in captivity can prevent their extinction. The largest octopus ever recorder belonged to the Giant Pacific Octopus species and weighed in at 600 pounds with an arm span of over 30 feet. species, Octopus maya, and attempts to farm octopus are un-der way in other parts of Latin America, including Chile. The octopus is equipped with special pigment cells, called chromatophores, just below the surface of the skin that allow it to change color and blend in with rocky or coral-laden surroundings. Efforts to farm octopus have reached a major breakthrough with the spawning of octopuses in captivity. In laboratory situations, octopuses build dens out of shells ( Nautilus , Strombus, barnacles ), or artificial terracotta flower pots, glass bottles, PVC tubes, custom blown glass—basically, whatever is available. Octopuses, including the giant Pacific octopus, are also known for having blue blood thanks to a copper-rich protein called hemocyanin in their bloodstream, which is efficient for oxygen transport in cold ocean environments. When the subject of octopuses arises, it is important to remember that they have been in existence for a long time. Males and females attract each other using visual cues. Viewing Octopus Choreography In Captivity : 13.7: Cosmos And Culture Anthropologist Barbara J. It is the largest octopus species in the world, the largest specimen ever having weighed 600 pounds and more than 30 feet across! Welcome to another Quick Peek. 6. Giant Pacific octopuses can be found more than 330 feet (100 m) underwater. As I mentioned above, I generally prefer to use a well-sealed aquarium with an open sump in which to keep the skimmer and filtration, but a carefully sealed tank without a sump can work just as well, provided you have a reasonably large tank (say at least 30 gallons for an octopus whose head is about the size of a mandarin orange) and good filtration. Under those circumstances, the octopus may stop eating until it feels safe in its new environment or it has recovered from its ordeal. It seemed an awful lot like a game of catch and certainly a lot like play. Its spatial distribution includes the coastal North Pacific, along California, Oregon, Washington, British Columbia, Alaska, Russia, Japan, and Korean Peninsula. Sign up today to get weekly updates and action alerts from Oceana. Zoos, aquariums, water parks, and other facilities can help to maintain the viability of endangered species when humanity does not do a good enough job of protecting the animals in the wild. 4. Despite its large size, the octopus can compress its body to fit through any opening larger than its beak. Indeed, the giant Pacific octopus will return in that article. Female giant Pacific octopuses lay 18,000 to 74,000 eggs that are the size of a grain of white rice. In China, up to eight different species of octopus are now being experimentally farmed. The largest individual on record weighed an impressive 600 pounds and measured 30 feet across in length. The natural lifespan of the giant Pacific octopus is long by the standard of octopuses. The only member of this genus that deserves the common name "Giant octopus" is Enteroctopus dofleini. Some have … The mother will then spend up to 7 months in the wild, and sometimes longer when in captivity, protecting and taking care of her eggs. In fact, few of a spawning's thousands of hatched babies will reach maturity. The giant Pacific octopus is a cephalopod species native to the northern Pacific Ocean. Guinness World Records lists the largest specimen as weighing 136 kg (300 lb) with an arm span of 9.8 m (32 ft). Another reason is that octopuses eat a variety of fish and invertebrates that saltwater aquarists normally like to keep in their aquariums. And then climb across into nearby tanks. It is the largest octopusspecies, based on a sci… Occasionally an octopus will lay eggs in captivity. It is found in the northern Pacific Ocean from the northwest coast of the continental United States to Japan, including Puget Sound. It's also larger than many vertebrates, although not mammals. A great way to get involved in protecting #oceans: Join Oceana as a Wavemaker & sound off on important issues! Its strong arms are capable of tearing prey such as crabs apart so that it can get at the tasty flesh within. Many scientists are contributing to the tools and technology to make genetic modifications that may accelerate industrial aquaculture of octopus and other types of cephalopods. That is larger than some adults and heavier than many children! Sign our petition to tell GrubHub to take shark fin off the menu now – before the ocean’s most iconic predators disappear. Sep. 24, 2020. Oceana joined forces with Sailors for the Sea, an ocean conservation organization dedicated to educating and engaging the world’s boating community. An excellent method of doing this which they seem to enjoy is to use puzzle boxes and child-proof pill bottles. Global octopus exports Although more than 100 countries exported octopus products between 2009 and 2013 (Figure 3), the ten largest Octopuses typically die shortly following breeding. Indeed it would seem that it is. This has led to inaccurate information circulating among octopus enthusiasts that octopuses in captivity experience high incident rates of malnutrition which could lead to illness and even death. One of the best examples of this advantage is the Przewalski’s horse. Octopus factory farming is ethically and ecologically unjustified.” There are about 300 species of octopus and many behave in surprisingly sophisticated ways. Phylogeny Tracker: Clades from Biota to Animalia. Like other octopuses, the giant Pacific octopus is extremely intelligent and has been observed opening jars and mimicking other species. The average weight of the giant Pacific octopus is 50kg (110 pounds). Unique behaviors like beak-to-beak mating, den co-occupancy by a mating pair, extended spawning, and unique prey-capture were observed in captive larger Pacific striped octopus. Keeping Your Octopus In Its Tank. Giant Pacific octopuses have short lifespans of only 2 to 3 years on average. As with any octopus kept in captivity, their keepers should engage in enrichment. Males die within a few months after mating and females shortly after the eggs hatch. In China, up to eight different species of octopus are now being experimentally farmed. Because the modified arm they use for reproduction has fewer suckers. Adults usually weigh about 15kg (33 pounds) and they have an arm span around 4.3 meters (14 feet). With stories like that, it is not surprising that in movies, books, and pop culture, many people envision every octopus as being large. Two of the three hearts pump blood to the gills, while the third circulates blood to the rest of the body. A female Giant Pacific Octopus will lay up to 74,000 eggs in strands that she hangs along the walls of her den. Octopuses are actually mollusks—their shells are located in the head as two small plates and the rest of their body is soft. well it depends what species of octopus you're talking about. This suggests that the giant Pacific octopus may make a regular meal of these sharks. This means that octopuses and “proto-octopuses” were well established during the Triassic era. Octopuses have about as many neurons as a dog - the common octopus (Octopus vulgaris) has around 500 million. Octopuses use one central brain to control their nervous systems and a small brain in each arm to control movement. The Largest Octopus of All Time. The average weight of the giant Pacific octopus is 50kg (110 pounds). Giant Pacific octopuses can grow to 29.5 feet (9 m) wide from the tip of one arm to the tip of another and 44 pounds (20 kg). Think you know cephalopods? Common activities involve making their dinner hard to get to so that they get to exercise their powerful brains and engage their powerful arms. They have a lot of suckers along their long eight arms. Working with scientists and conservationists, a breeding program began to create new h… Their earliest ancestors date back 500 million years. Share. In Japan, the seafood company Nis-sui reported hatching octopus eggs in captivity in 2017 and This octopus had a … Notorious for climbing out so seal the tank carefully. Pacific Octopus live off the American West Coast in the cold Pacific water. But farming these sea creatures to become our food might be unethical and bad for the environment, some scientists say. Measuring 20 feet and 3 inches, “Lolong” was once the world’s largest crocodile in captivity until his death in February, 2013. Giant Pacific octopuses can change color in one-tenth of a second. 5. Cephalopod facts curated by the Curious Octopus. To order a copy for £17 (RRP £20) go to bookshop.theguardian.com or call 0330 … About two thirds are located in its arms. During this stage, they have greatly reduced appetites or stop eating altogether. When it reaches an age of about one to two years, it is ready for Spring mating. Its average length is 5 meters (15 feet). Scientists have been trying to rear the lozenge-sized animal in captivity since the 1970s, and in late 2018, MBL became the first to culture it over multiple generations, says Grasse. The largest recorded suckers from a giant Pacific octopus are about 6.4 cm (2.5 inches) across. The size record is held by a specimen that was 30 feet across and weighed more than 600 pounds. King spends a morning with an octopus in an effort to find out how to … Females have about 2,240 suckers. Because of this behavior, it is difficult to know population numbers of the giant Pacific octopus. The Giant octopus is Enteroctopus, and one of its species is the largest octopus.There are four species: the North Pacific Giant Octopus (E. dofleini), the Southern Giant Octopus (Enteroctopus magnificus), E. megalocyathus, and E. zealandicus.. Overview. It has to do with the optic gland between the octopus's eyes; a gland similar to the pituitary gland in humans. Indeed, like most octopuses, they are smart and very deft with their powerful and dexterous arms. Scientists Warn This Isn't a Good Idea Efforts to raise octopuses in captivity, like we do with salmon and other fish, are on the rise. In 2000, the country caught 99,400 tons of octopus, more than twice the haul of Japan, its nearest competitor. In addition, they can each support a massive 16 kg (35 pounds) of weight! The largest crocodile in captivity ever was a 6.17-m (20-ft 2.91-in) saltwater crocodile (Crocodylus porosus) captured on 3 September 2011 in Bunawan, in the province of Agusan del Sur, Mindanao, Philippines. Morocco, for example, was once the largest octopus supplier in the world. The giant Pacific octopus grows bigger and lives longer than any other octopus species. The giant Pacific octopus has a large bulbous “head” and it is typically reddish-brown. The member of this genus that best embodies the common name "giant octopus" is Enteroctopus dofleini, which holds the record of being the world's largest octopus based on direct measurements of a 71 kilograms (157 pounds) individual, weighed live. Other Minds: The Octopus and the Evolution of Intelligent Life is published by William Collins. Other Minds: The Octopus and the Evolution of Intelligent Life is published by William Collins. To catch food in those tanks! The crocodile was named Lolong and housed in a custom-built enclosure at Bunawan Eco-Park and Research Centre, Philippines. This octopus can reach a large size of up to a 70cm span in captivity therefore a large tank is required. pioneering research into full life-cycle octopus farming and expects to overcome initial barriers within three years, paving the way for large-scale octopus aquaculture in the near future (Globefish, 2014). Viewing Octopus Choreography In Captivity : 13.7: Cosmos And Culture Anthropologist Barbara J. They capture their prize and then return to their den. However, the largest observed individual was said to be 9 meters (30 feet) across and weighed 272kg (600 pounds). Giant octopuses at the Seattle Aquarium were observed repeatedly using their siphons to shoot objects towards their exhibits water filter and then catching it when it came back. Since the Seven-Arm Octopus is relatively unknown, the Giant Pacific Octopus is widely considered to the be the world’s largest octopus species. The Largest Octopus of All Time. We are restoring the world’s wild fish populations to serve as a sustainable source of protein for people. It can use toxic saliva to paralyze its prey so that it can tear into it with its sharp beak. They typically live three to five years. Therefore, along with predation, starvation is one of the two typical causes of death for the giant Pacific octopus and octopuses in general. Octopus vulgaris This is the common octopus. We will be seeing more about octopus intelligence in an upcoming article. On average, though, these octopuses weigh closer to 110 pounds and measure 16 feet across once fully grown. Today we are looking at the giant Pacific octopus, Enteroctopus dofleini. For an adult-age giant Pacific octopus, the average weight is 15 kg (33 lb) and the average arm span is 4.3 m (14 ft). Sid, an octopus who was held captive in New Zealand, had been successful in escaping from his tank multiple times and even stayed in a drain for five days in an effort to hide before yet another escape attempt. Aside from being the largest of all octopuses, the giant Pacific octopus is also recognizable by its typical reddish-pink color. Welcome to another Quick Peek. In 2000, the country caught 99,400 tons of octopus, more than twice the haul of Japan, its nearest competitor. On the other, we have the North Pacific giant octopus, which boasts of being the largest octopus, with an arm-span of 14 feet and an average weight of 33 lbs. However, males have about 100 fewer suckers. One … They started off as shelled critters such as the ammonites and now mostly have only rudimentary internal shells, if any. But it can change its colour in as little as one-tenth of a second if it needs to employ camouflage to elude predators. GIANT PACIFIC OCTOPUS (Enteroctopus dofleini) is the largest species of octopus in the world. Giant Pacific octopuses spend most of their lives alone. Giant Pacific octopuses only live an average four to five years in the wild, yet they are still considered one of the longest-living octopus species. In Japan, the seafood company Nis-sui reported hatching octopus eggs in captivity in 2017 and After mating, a female will lay up to 74,000 eggs or more in a deep den or cave and live there for seven months watching over them. It is great to witness for education, but hard to see as a pure hearted spirit. Octopuses seem to be particularly prone ... as long as it's bigger than the schnoz. 7. Including the biggest, smallest and most ... A closeup of a giant Pacific octopus, the world's largest ... continuing to eat, hunt and mate. We have already protected nearly 4 million square miles of ocean and innumerable sea life - but there is still more to be done. The main thing that prevents octopus farming at large scale is that the common octopus – Octopus vulgaris – is tough to feed in captivity, especially when first born. This fact is important as the large-egged octopuses are much easier to rear. Even though all the species of octopus that are found on the planet are venomous to a certain extent, only the blue-ringed octopus, native to the Pacific, has venom that is potent enough to kill humans. Keeping large animals in captivity literally damages their brains. Aside from being the largest of all octopuses, the giant Pacific octopus is also recognizable by its typical reddish-pink color.

PART OF WILD SKY MEDIA | FAMILY & PARENTING, Alaska Pacific University: Giant Octopus Life Cycle, Everything Octopus: Life Cycle of an Octopus, Oregon Public Broadcasting: Octopus Babies Hatching in Puget Sound, The Bizarre Life Cycle of Octopuses: Young Octopuses. Since they lack a protective outer shell, octopuses like the giant Pacific octopus, use their camouflage abilities to stay safe. As well as marine mammals such as sea lions, sea otters and whales. Elusive Dwarf Octopuses Hatch in Captivity. However, this croc is still shorter than Lolong (died on February 10, 2013).Lolong is a 20-feet 3-inches saltwater crocodile who holds the Guinness World Record for the largest saltwater crocodile in captivity.. Meet Lolong, the Guinness World Record holder for the largest saltwater crocodile even after he died. Description. Their earliest ancestors date back 500 million years. I will leave you with some of its taxonomic information. The giant Pacific octopus has been known to remove the lids of their tanks. O. briareus, on the other hand, lays approximately 500 large eggs which hatch into benthic young (Sweeney 1992). King spends a morning with an octopus in an effort to find out how to … This series will provide a quick and not comprehensive look at some of the most curious species and groups of cephalopods. On average, the Giant Pacific Octopus weighs between 22 – 100 pounds (10 – 50 kilograms). The North Pacific Giant Octopus is a large cephalopod found in the coastal North Pacific, ranging from Southern California to the Alaskan waters.Although living at drastically different depths, the octopus generally resides at around 215 ft. It is perhaps the largest species of octopus in the world. This is considerably longer than the lifespans of many other octopuses, which have a lifespan of one or two years. if its in captivity they live only 1 year but in the wild giant pacific octopuses live 5 to 6 years. The males use their hectocotylus to deposit spermatophore into the oviduct in the mantle of the female. Giant Pacific octopuses have 2,140 to 2,240 suction cups on their arms, giving them a powerful grip and sense of taste and smell.2. Why would they do this? One reason for this is that many octopus species grow somewhat large. The mother will then spend up to 7 months in the wild, and sometimes longer when in captivity, protecting and taking care of her eggs. Why Tracy Morgan’s Pet Octopus Should Be a Dog. Going forward, the octopus lives a benthic life, spending most of its time on the ocean floor and has a far higher survival rate. This octopus had a total length near Hunted to extinction in the wild, there were about a dozen left in captivity at a single zoo in Europe. We have evidence that this may be common. ... Large zoos, like the Woodland Park Zoo in Seattle, WA, produce over $17 million in employee wages each year. Indeed, we have seen the consumed carcasses of spiny dogfish around their dens. That is to say, one of these suckers can support the weight of an average four-year-old child! 2. The octopus subsequently made a quick meal of the unfortunate bird! It was caught off the waters of … Octopus Farms Could Become a Reality. This means that octopuses and “proto-octopuses” were well established during the Triassic era. Population Status. They hunt at night for shrimp, clams, lobsters and fish, but have also been known to eat small sharks using their beak-like mouths to puncture prey. The comedian Tracy Morgan is known for his outlandish sensibilities, caricatured by his character Tracy Jordan on the NBC show 30 Rock. Octopus briareus This is the Caribbean or Florida Octopus. You will also have hospitality, transportation, and food service positions available because of the presence of a popular zoo. Specimens can live for more than 100 years, can grow to 7 m (23 ft) and weigh more than 1 tonne (1.1 ton)!

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