Crabeater
seals probably got their name because of a mistake by the early sealers who went
down to the Antarctic. They actually eat krill, the staple diet of much of
Antarctica's bird and mammal population.In
fact there are no crabs at all in Antarctic waters, nor any other Decapod
Crustaceans either such as lobsters. No crabs live south of the Antarctic
Convergence.
Crabeater seals are
uniquely adapted amongst seals in that their teeth are adapted to form a sieve
in a similar manner to the baleen plates of the great whales. They take a
mouthful of seawater and krill and expel the water through gaps in their teeth
while the parts that overlap prevent the krill from escaping.
Each
seal consumes about 20kg of krill per day, and a quick bit of maths calculates
that between them, crabeaters eat 1 million tonnes of krill per day! That's an
awful lot of little shrimps!
Crabeater
seals are circumpolar living all around the edge of the Antarctic continent.
Photo; © Paul Ward - Pentax equipment,
100mm
lens, 35mm film, K64.
This picture may not be copied or used in any manner without
prior written permission.