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Coral Sand
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Coral Sand Under a Microscope

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Three gray fish swim in front of a large coral head.
Overview

Cabo Pulmo Protected Area

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a squid
Article

Meet the Only Squid that Willfully Lops off its Arms

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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.
Article

Five Questions with Russ Hopcroft, Zooplankton Whiz

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a comparison of multiple species of jellyfish
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How Big do Jellyfish Get?

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An adult leatherback turtle makes its way back to shore from the ocean.
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Female Leatherback Turtle Crawls From The Sea To Nest

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The "Lower Invertebrates" exhibit in Smithsonian Institution Building in 1901 included models of a giant squid and an octopus.
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More Than a Century of Smithsonian Marine Science

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One ocean. More than 100 moored buoys gather data on the single, contiguous, body of water that encircles the globe.
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Buoy Collects Data on the Open Ocean

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How do plants respond to rising CO2 levels? To find out, plant physiologist Bert Drake monitors plants used in his CO2 study at the Smithsonian Environmental Research Center (SERC) near the Chesapeake Bay in Maryland.
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CO2 Marsh Study

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Photo of sockeye salmon spawning.
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Sockeye Salmon, Adams River, British Columbia, Canada

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Flame shells live in enormous colonies, but hidden in nests.
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Orange-Tentacled Flame Shell

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A graph showing the population decline of vaquitas from 1997 to 2019. In 1997, there were 567 vaquitas. In 2012, there were 200. By 2014 there were fewer than 100, and by 2019 there was an estimated 6 to 9 vaquitas left.
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A Population in Decline

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