"Sea squirts - gelatinous tubes "
"One of the extraordinary adaptations which evolution generates in the extreme Antarctic cold is found in the ice fish. It has evolved to have no red blood cells and no haemoglobin, meaning that its blood flows more freely. The oxygen which its muscles need simply dissolves in the blood.
This sea star, found near a glacier mouth, is unusual in having 12 arms instead of the usual five. "
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