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An illustration of the megalodon shark.
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Ancient Giant Megatooth Shark

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

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ichthyosaurs frolic in the waves
Article

Form Equals Function for Ancient Sea Lizards and Modern Whales

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Illustration of a four-legged proto-whale with webbed feet.
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Early Whale with Webbed Feet

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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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Illustration of the Paleozoic shallow water habitat.
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A Mississippian Marine Habitat (359 - 318 Million Years Ago)

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The first known filter feeder is a large shrimp-like creature called Tamisiocaris borealis. The feather-like structures on its head were used to rake plankton from the sea.
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The First Filter Feeder

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Blue whale skull being installed at National Museum of Natural History.
Article

When Did Today’s Whales Get So Big?

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A Hawaiian petrel in flight
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4,000 Years of Marine History through the Eyes of a Seabird

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

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Offshore Peru, during the Eocene (~56-34 million years ago), showing two archaeocetes (ancient whales): Ocucajea picklingi and Supayacetus muizon.
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Eocene Whales and Penguins Off the Coast of Peru

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Illustration of Opabinia with five eyes and what look like scales.
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Opabinia

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