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A photo of a squid using bioluminescence to hide in the deep sea.
Overview

Bioluminescence

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A female (top left) and male Photerus annecohenae. Note that females are larger than males (sexual dimorphism) and that males have bigger eyes.
Article

You Light Up My World!

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Colorful layers of a microscopic foram.
Photo

A Colorful Foram: Globigerinoides ruber

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Two nurse sharks hover over a baited cage
Lesson Plan

Just Jelly: ecological role of gelatinous zooplankton

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A bloom of algae from up above
Article

What Exactly Is a Red Tide?

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Two nurse sharks hover over a baited cage
Lesson Plan

The Great Plankton Race

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

Phronima Alien

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Dinoflagellates are major producers of oxygen in the ocean (and freshwater). But some species can grow out of control, causing a red tide.
Photo

Dinoflagellate

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Oikopleura gorskyi is a rare deep-water species of larvacean
Photo

Deep-Water Larvacean

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This copepod (Gaussia princeps) was collected deeper than 1000 meters in the Sargasso Sea by Census of Marine Zooplankton (CMarZ) researchers in April 2006.
Photo

Deep Sea Copepod

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A transparent ctenophore in dark water.
Photo

A Ctenophore Feeds

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Forams are tiny single-celled organisms.
Slideshow

Foraminifera

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