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An artistic rendering of an ocean landscape as it may have looked during the Archean Eon.
Slideshow

The Ocean Throughout Geologic Time, An Image Gallery

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a hairy frogfish with a dark background
Article

Anglerfish Lure Prey Throughout the Ocean

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a gray whale pokes its head above the sea surface
Article

Atlantic Gray Whales: Past, Present, and Future

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White and black corals in murky sea water
Article

Collecting Coral Codes: Environmental DNA Helps Scientists Assess Coral Biodiversity 

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The head of one bottlenose dolphin and the fin of another are visible above turquoise water in the Potomac River
Article

A Dive into Dolphin Data: The History of Bottlenose Dolphins in the Potomac River

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Jellyfish produce mucus, especially when stressed, which can interact with oil and break it down. This moon jellyfish is sloughing off mucus that has mixed with droplets of oil.
Article

How Jellyfish Break Down Oil After a Spill

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A narwhal breaches the surface, its tusk pointed to the sky
Article

Why a Tusk? The real-life unicorns of the sea and the tusks that make them famous

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On average, Arctic sea ice has decreased by four percent per decade since the late 1970s.
Overview

Sea Level Rise

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measuring a fish
Video

Really Small Fry: Shifting Baselines in Marine Fish Stocks

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A screenshot from the video showing scientists holding a small shark preparing for tagging.
Video

Tagging Sharks with the Smithsonian Movement of Life Initiative

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Screen shot of "Sea Grapes: A Google Earth Tour" with aerial view of the Earth in Google Earth.
Video

Sea Grapes: A Google Earth Tour

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Jellyfish are transparent and made up of 95 percent water, so you’d think there isn’t much to them. But you’d be wrong. Jellyfish are more complex than you’d think—and one of their most fascinating parts is their stinging cells.
Video

How Do Jellyfish Sting?

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