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Fossil mosasaur skull and partial skeleton sitting in what looks like the dirt it was excavated from.
Article

If You Build An Ocean, Sea Monsters Will Come

Building a productive ocean is complicated. The process is long (on the order of...
October 2018
The Komodo National Park site in Indonesia was inscribed on the World Heritage List in 1991. The site hosts "Komodo dragons" (Varanus komodoensis), a unique species that exists nowhere else in the world and is of great interest to scientists studying evolu
Article

Tunicates—Not So Spineless Invertebrates

There are thousands of marine invertebrate animals in the ocean, from small to...
June 2018
An ancient whale ancestor
video

Evolution of Whales Animation

Whales have existed for millions of years. Watch this animation, from the Sant...
Wed, 09/30/2009 - 11:21
Rough periwinkles sit on a bed of barnacles.
Personal Perspectives

Spirals in Time: A Walk at the Seashore

When I set out to write a book about mollusks (called Spirals in Time), I wasn't...
July 2015
A 3-D reconstruction of the skull of a fin whale fetus.
Article

Keeping An Ear Out For Whale Evolution

Large whales are notoriously hard to study. Except when rising to breathe, they...
March 2015
This male dancing fiddler crab (Uca terpsichores) has built a sand “hood” at the entrance to his burrow, which he hopes will attract females to his humble abode—as if that big beautiful claw of his weren't enough!
Personal Perspectives

The Design of a Beautiful Weapon

This summer, many of you have likely enjoyed feasting on crabs, be they blue,...
September 2013
A screenshot from the video showing a fiddler crab with a large claw.
video

Claws Out: Fiddler Crabs Do Battle

Male fiddler crabs each have a single super-sized claw that they use as a weapon to...
Tue, 09/03/2013 - 16:18
A researcher holds an arm bone from a "toothed" mysticete whale from Vancouver Island.
Personal Perspectives

Dispatches from the Field: Treacherous stream crossings and a new fossil find

We departed from Port Renfrew on Tuesday morning on the Michelle Diana, a boat...
May 2012
Nick Pyenson points to a skull and skeleton of a fossil whale.
Personal Perspectives

Excavating a "toothed" baleen whale from Vancouver Island

The whales that we see in today's world can broadly be split into two groups: those...
May 2012
Two baby olive ridley sea turtles.
Article

Surveying Life On Sea Turtles

“It is strange to think of a sea turtle as an ecosystem,” says Amanda...
November 2011
An adult and juvenile killer whale frolic in the water.
Personal Perspectives

Menopausal Moms: A Mammal Mystery

In honor of Mother's Day, the Citizens of the Sea blog salutes ocean-going mothers...
May 2011
A close up profile of an adult anglerfish female from the Linophryne family collected in the northern region of the Gulf of Mexico. © 2016 DEEPEND/ Dante Fenolio

Meet the Tiny Bacteria That Give Anglerfishes Their Spooky Glow

Descend two hundred meters (about 656 feet) below the surface and the ocean is...
October 2016
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