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A rendering of an underwater marine scene from the Proterozoic Eon, featuring a creature that resembles a jellyfish and other organisms.
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Ediacaran Community, Proterozoic Eon (2,500 - 542 Million Years Ago)

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Kemp’s ridley turtles (Lepidochelys kempii) are the smallest sea turtles, weighing only 100 lbs (45 kg). Adults spend most of their time in shallow coastal areas in places with mud, sand, or gravel bottoms—often in seagrass beds. They eat swimming crab
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Kemp's Ridley Turtle

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Photograph of a transparent comb jelly against a dark sea.
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Bioluminescent Comb Jelly

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Illustration of colorful nudibranchs from Ernst Haeckel.
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Nudibranchs

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Cover of the Book Citizens of the Sea
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Citizens of the Sea

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This aptly named fish has two long fangs.
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Creepy Critters: Marine Life Surfaces for Halloween

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Blue Dragon nudibranchs are very common to the southeast coast of Australia and have a few color variations. Juveniles are white with blue rhinophores, and adults vary from dark purple to lavender to golden brown.
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Serpent Pteraeolidia

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The People's Reef--Part of the Hyperbolic Crochet Coral Reef
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The Hyperbolic Crochet Coral Reef

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New deep sea expeditions reveal new species underwater.
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New Jelly Species: 'Bathykorus bouilloni'

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A newly hatched leatherback turtle moves in the sand.
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Habitat for Leatherback Turtles

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