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A side-view of a translucent phronima with a large red eye.
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Phronima Alien

This is another view of Phronima from the side. The eyes take up most of the head,...
Three hyperiids, each with two large eyes and red body showing through their translucent bodies.
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Themisto

These Themisto hyperiids live in the top 200 meters of cold waters around the...
Two small, translucent hyperiids with very large eyes.
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Paraphromina

This much smaller hyperiid (in the genus Paraphromina) has eyes that make up...
A side-view of translucent hyperiid with a black background.
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Cystisoma

This hyperiid (in the genus Cystisoma) has only one pair of eyes—but they are...
Dinoflagellates are major producers of oxygen in the ocean (and freshwater). But some species can grow out of control, causing a red tide.
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Dinoflagellate

Dinoflagellates are an important group of phytoplankton that produce oxygen in...
A spiraled diatom with spines.
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A Diatom Helix

This beautiful marine diatom Chaetoceros debilis was caught in the North Sea. Not...