Madeleine Hull
Despite their name, crabeater seals do not eat crabs. They are specialist predators of Antarctic krill, which makes up over 90% of their diet. They are the most abundant seal species in the world, with a circumpolar distribution around the coast of Antarctica. Crabeater seals are true seals with long, dog-like snouts and slender bodies. They are found mainly on the pack ice and in the near-freezing waters off the coasts of Antarctica, though they have been spotted as far north as South Africa, New Zealand, and even Brazil.
| Characteristics | Values |
|---|---|
| Diet | Antarctic krill, fish, squid, and other marine invertebrates |
| Diet % | 89-90% krill |
| Feeding Time | Night |
| Feeding Style | Filter-feeding |
| Feeding Depth | 30-100 feet, but can dive up to 1,000 feet |
| Feeding Duration | 10 minutes |
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What You'll Learn
Crabeater seals eat a lot of krill
Crabeater seals are found in the Antarctic region, primarily on the pack ice and in the near-freezing waters off the coasts of Antarctica. They are the most abundant seal species in the world, with a population of around 7 to 75 million. Crabeater seals are also known as krill-eater seals, and their diet consists mostly of Antarctic krill. In fact, they eat more krill than any other animal.
Despite their name, crabeater seals do not eat crabs. Their scientific name, Lobodon carcinophaga, translates to "lobe-toothed crab eater", referring to their finely lobed teeth, which are specially adapted for straining small prey items out of the water. These teeth allow them to eat large quantities of krill every day without expending much energy. Krill makes up over 90% of their diet, with the rest consisting of fish, squid, and other marine invertebrates.
Crabeater seals are true seals, characterised by their long, dog-like snouts, slender bodies, short flippers, and the absence of external ears. They are medium to large-sized, typically reaching lengths of 2 to 2.5 metres and weights of up to 400 kilograms. Crabeater seals are gregarious, often gathering in large groups of up to 1,000 individuals on ice floes or while swimming and diving.
The abundance of crabeater seals can be attributed to their specialised diet of Antarctic krill, which is the most abundant species with the greatest biomass on the planet. The unique tooth structure of crabeater seals allows them to efficiently filter and consume large quantities of krill, contributing to their successful survival and reproduction in the Antarctic region.
In summary, crabeater seals are aptly named krill-eater seals due to their high consumption of Antarctic krill. Their specialised teeth, behaviour, and the abundance of krill in the Antarctic region contribute to their status as the most abundant seal species in the world.
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They also eat cephalopods and Antarctic fish
Crabeater seals are true seals with a circumpolar distribution around the coast of Antarctica. They are the only member of the genus Lobodon. They are medium- to large-sized (over 2 m in length), with slender bodies and long, slightly upturned snouts. Their fur ranges from dark brown to blonde, becoming lighter in summer.
Despite their name, crabeater seals do not eat crabs. In fact, there are very few crab species in their range, and these are mostly found in very deep water. Crabeater seals are specialist predators of Antarctic krill, which make up over 90% of their diet. They have uniquely adapted, sieve-like tooth structures that allow them to filter large quantities of krill from seawater with minimal energy expenditure.
However, crabeater seals also eat cephalopods and Antarctic fish, which make up a smaller portion of their diet. These include squid and other marine invertebrates. Crabeater seals are carnivores and feed mostly at night, diving fairly deeply in search of prey. They are the most abundant seal species in the world, with a population of at least 7 million and possibly as many as 75 million.
Crabeater seals are highly gregarious, often gathering in large groups of up to 1,000 individuals on ice floes. They are found mainly on the pack ice and in the near-freezing waters off the coasts of Antarctica, but some have been spotted as far north as South Africa, New Zealand, and even Brazil. They are well-adapted to life in Antarctica, with their slender bodies and pale fur providing an advantage in their icy habitat.
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Crabeater seals do not eat crabs
Despite their name, crabeater seals do not eat crabs. They are specialist predators of Antarctic krill, which make up over 90% of their diet. They are also known to eat fish, squid, and other marine invertebrates. Crabeater seals are true seals, perfectly adapted to living in Antarctica, found almost exclusively amidst the pack ice. They are the most abundant seal species in the world, with a population of at least 7 million and possibly as many as 75 million.
The scientific name of the crabeater seal, Lobodon carcinophaga, translates to "lobe-toothed crab eater". The name "crabeater" was a mistake made by early whalers and sealers, who believed these seals ate crustaceans. However, Antarctic waters are home to very few crab species, which mostly live in deep water. Instead, crabeater seals have evolved to take advantage of the abundant supply of krill in the Southern Ocean. They have a unique, sieve-like tooth structure that allows them to filter large quantities of krill from the water with minimal energy expenditure.
Crabeater seals are medium to large-sized, with adults reaching over 2 metres in length and weighing around 200 kg on average. They are slender, with long, slightly upturned snouts and silvery-grey to whitish fur. Crabeater seals are gregarious, often gathering in large groups of up to 1,000 individuals on ice floes. They are highly successful, with their abundance attributed to their specialised diet of krill, which is the single species with the greatest biomass on the planet.
Crabeater seals are monogamous, with a short breeding season from October to December. A single pup is born between September and November of the following year, with most births in mid-October. The pups are born on ice floes, weighing around 20-30 kg, and are nursed by their mother for three to four weeks. During this time, the father defends the mother and pup from other males and predators. Crabeater seal pups grow rapidly, gaining around 4.2 kg per day, and are almost fully grown by the age of two.
Crabeater seals are protected by the Antarctic Treaty and the Convention for the Conservation of Antarctic Seals. They are not known to face any major threats at present. Their population is stable, and they are considered one of the most numerous large mammals on Earth.
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They are filter-feeders, like baleen whales
Crabeater seals are filter-feeders, like baleen whales. They are highly specialised predators of Antarctic krill, which make up over 90% of their diet. They have evolved lobe-like teeth that allow them to strain their tiny crustacean prey from seawater, much like a sieve. This feeding mechanism enables them to consume large quantities of krill daily without expending much energy.
The scientific name for the crabeater seal, Lobodon carcinophaga, translates to "lobe-toothed crab eater". The name "crabeater" was a misnomer coined by early whalers and sealers, who mistakenly believed these seals fed primarily on crabs. However, Antarctic waters are largely devoid of crabs, and the crabeater seal's diet consists overwhelmingly of krill.
The crabeater seal's unique tooth structure is well-adapted for filtering krill from the water. As they swim through swarms of krill, they open their mouths to scoop up a mixture of krill and water. They then close their mouths and use their specialised teeth to strain out the excess water, retaining the krill for consumption. This feeding behaviour is similar to that of baleen whales, which also filter feed by swimming with their mouths open to collect prey and then straining the water through a sieve-like structure.
The crabeater seal's diet is closely tied to its habitat and distribution. They are found primarily on the free-floating pack ice that extends seasonally from the Antarctic coast, which they use as a platform for resting, mating, social aggregation, and accessing their prey. Crabeater seals are the most abundant seal species in the Southern Ocean and are estimated to number in the millions. Their success is attributed to their specialised diet of abundant Antarctic krill, which provides a consistent and plentiful food source.
In addition to krill, crabeater seals also consume small amounts of other crustaceans and marine invertebrates, such as fish and squid. However, their diet is predominantly focused on krill, which they are highly adapted to hunting and consuming in large quantities. This specialised diet and their ability to filter feed efficiently have contributed to the crabeater seal's success as the most abundant seal species in the world.
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Crabeater seals are the most abundant seal species
Crabeater seals are considered the most abundant seal species in the world. They are found in Antarctica, with a circumpolar distribution across the Southern Ocean. Crabeater seals are "true" or "earless" seals, perfectly adapted to the Antarctic environment, and are mostly found amidst the pack ice. They are faster than most other true seals and can outrun a person on ice.
The scientific name for crabeater seals is Lobodon carcinophaga, which translates to "lobe-toothed (lobodon) crab eater (carcinophaga)", referring to their finely lobed teeth. These unique, sieve-like teeth are well-adapted for straining small prey from the water. Despite their name, crabeater seals do not eat crabs. In fact, there are very few crab species in their range, and those that are present are found in deep water. Instead, their diet consists mostly of Antarctic krill (Euphausia superba), which makes up over 90% of their diet. Their diet also includes small amounts of other crustaceans and marine invertebrates, such as fish and squid.
Crabeater seals are medium- to large-sized, with adults reaching over 2 metres in length and weighing around 200 kilograms. They have slender bodies, long, pointed snouts, and short flippers. Their fur colour ranges from dark brown to blonde or silvery-grey, becoming lighter in the summer. Crabeater seals are gregarious, often gathering in large groups of up to 1,000 individuals, particularly during the annual molt. They breed on the ice in spring, from September to December, and females give birth to a single pup, which they nurse for around three weeks.
Crabeater seals are protected by the Antarctic Treaty and the Convention for the Conservation of Antarctic Seals. While there are no major threats to this species at present, they are preyed upon by leopard seals and orca (killer whales). Despite this, crabeater seals are extremely successful, with a population of at least 7 million and possibly as many as 75 million individuals. This success is largely due to their specialised diet of abundant Antarctic krill.
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Frequently asked questions
Despite their name, crabeater seals do not eat crabs. Crabeater seals are carnivores and their diet consists of mostly (over 90%) Antarctic krill.
Krill are small crustaceans. Crabeater seals are able to eat large quantities of krill every day due to their highly specialised, lobed teeth that allow them to filter feed.
Crabeater seals also eat other invertebrates such as fish, squid and cephalopods.
Crabeater seals are filter feeders. They swim into swarms of krill with their mouths open, scooping up a soupy mix of krill and water. They then close their mouths and use their lobed teeth to strain the water out like a sieve.
Crabeater seals are found mainly on the pack ice and in the near-freezing water off the coasts of Antarctica. They feed mostly at night, diving fairly deep in search of prey.
