In pictures: Year of marine wonders
Bubble-feeder

Among the tiny creatures studied was Cavolinia uncinata, a marine "wing-footed" snail 10mm long.

These feed by making large feeding nets or bubbles to which food sticks as they sink through the water. They then suck in the net along with the food.

(Image: Russ Hopcroft, University of Alaska Fairbanks)

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