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a blue table top covered in many shells of different shapes and sizes

video

Human Impacts and Extinction of Freshwater Snails

Meet Dr. Ellen Strong, a zoologist at the Smithsonian's National Museum of Natural...

Fri, 08/20/2021 - 16:07

Harbor seal in a kelp forest near Cortes Bank, near San Diego California.

slideshow

Underwater Photography Contest from University of Miami’s Rosenstiel School

Every year the University of Miami's Rosenstiel School of Marine and Atmospheric...

Wed, 08/14/2013 - 11:27

A reddish-orange nudibranch.

slideshow

A Collage of Nudibranch Colors

Nudibranchs are a kind of sea slug, and their 3000 species are found from the poles...

Wed, 01/22/2014 - 12:51

A photo of Oceana's ice class research vessel, the Hanse Explorer, on the Baltic Sea.

slideshow

Biodiversity in the Baltic Sea

In the spring of 2011, a research crew from Oceana spent two months in the...

Wed, 10/12/2011 - 16:56

A nudibranch showing a closeup of their fleshy, tentacle-like growths, called cerata.

Article

How Sea Slugs Steal the Defenses of Their Prey

Not all slugs (snails without shells) are slimy brown pests found in your backyard...

January 2014

Nine small invertebrates held on two fingers.

Personal Perspectives

On Biodiversity: Understanding its Meaning and Importance

The ocean is home to a phenomenal diversity of marine organisms. They have evolved...

August 2011

Neptune grass (Posidonia oceanica) is a slow-growing and long-lived seagrass native to the Mediterranean.

Article

Bugs and Slugs: The Hidden Secret to Healthy Seagrasses

Slip into the water along a sheltered coast in nearly any part of the world and...

May 2015

Relatively slow moving, juvenile plane-head filefish Monacanthus hispidus (Monacanthidae) travel along with the algae. They pick off and eat small animals as they move around in the rotating sargassum ball. Adult filefish only grow to be about 11

Personal Perspectives

A World Adrift: Life in the Sargassum

The open ocean is surprisingly barren to the naked eye. Every now and again you...

May 2012

This shrimp is colored to fit in - probably why they are common members of the seaweed community.

slideshow

A World Adrift: Life in the Sargassum Slideshow

Smithsonian Marine Science Network Postdoctoral Fellow, Seabird McKeon, returns...

Fri, 05/18/2012 - 16:43

A bright-green sea slug with a black background.

audio

Sea Slugs: One Species at a Time

Come one, come all! See the amazing, the astonishing, half-animal, half-plant!...

Mon, 07/11/2011 - 14:12

Photo

Stunning Sea Slug

Not all slugs (snails without shells) are slimy brown pests found in your backyard...