Personal Perspectives

Menopausal Moms: A Mammal Mystery

In honor of Mother's Day, the Citizens of the Sea blog salutes ocean-going mothers...

Personal Perspectives

Bacteria on Whale Skin Tell a Tale of Health and Sickness

Whales swimming in the ocean are never really alone. Even if one swims by itself...

Article

Marine Parasites: Crazy…and Really Cool!

Marine parasites may be small in size, but they can be present in very high numbers...

Photo

Parasitic Worms in a Fish

The whitish spots on this fish are individual parasitic trematode worms. Trematodes...

Photo

Walrus Lice

The Echinophthiriidae are a family of lice that infect seals, sea lions,...

Citizens of the Sea

The incredible variety of marine life—in numbers, body form, behavior, and...

Photo

Blue Shark

Named for the radiant blue color on its back and sides, the blue shark (Prionace...

Photo

Phoenix Islands Protected Area, Kiribati

The Phoenix Islands Protected Area site in Kiribati was inscribed on the World...

Lesson Plan

What a Day for Ocean Microbes

For most of us, the term “marine organism” brings to mind images of fishes,...

slideshow

Marine World Heritage Photo Gallery

Marine World Heritage is a prestigious list of 43 marine ecosystems and...

Personal Perspectives

Peanut Butter and Jellyfish

All over the world, people have been witnessing gigantic blooms of tens of...

Marine Snow: A Staple of the Deep

Snow on land can make some people grumpy, but the magical-looking flakes and a...