Fish, Diatoms & Krill

Notothenia

Diatoms

Krill (Euphausia superba)

The source of life for all baleen whales, most penguins and seabirds. The amount taken by trawlers has diminished from 400,000 tons to 120,000 tons in the last 10 years. Now, why ? (Krill are used as a fishfarm foodstock)

Krill are damned by weighing more than seawater and spend their lives swimming upward. The female lays about 1000 eggs a year and they are supposed to be the world's most abundant life form. A year of light ice means more sunlight reaches the sea, more photosynthetic diatoms, more krill and hence more whale and penguins etc. Euphausids filter out the diatoms in the seawater. If alarmed they can jack-knife backwards like a crayfish.