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An illustration of the megalodon shark.
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Ancient Giant Megatooth Shark

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Artistic rendering of an ancient shark, Helicoprion.
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Illustration of Helicoprion

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Illustration of the extinct ammonite, related to the modern squid.
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Ammonite

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A rendering of an ocean scene as it may have looked 65 million years ago, when an astroid fell to Earth and triggered a mass extinction event.
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Cretaceous-Paleogene Boundary (65 Million Years Ago)

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A skeleton of an ichthyosaur
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An Ichthyosaur's Bones

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400 to 1,000 year old bones from an endangered seabird, the Hawaiian petrel. Bones such as these provide a window into the lives of seabirds before and after human arrival in the open ocean environments of the North Pacific.
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Petrel Bones Help Us Understand History

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Screenshot from video showing tiny foraminifera.
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Foraminifera on the Seafloor

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Squalicorax shark fossil from the Smithsonian
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Squalicorax Shark Fossil

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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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dugong feeds on seagrass in the Red Sea
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Dugong Feeding

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Notice the pink tentacles, which “recliners” used to filter feed.
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Recliner Rudists

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Hantkenina mexicana -- a foram with elongated shell chambers that lived between 45-49 million years ago, during the Eocene Epoch.
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Hantkenina mexicana

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