Today's Catch

Parasitic Worms in a Fish

The whitish spots on this fish are individual parasitic trematode worms. Trematodes have complicated life cycles that usually involve multiple hosts -- often starting in a snail and then moving on to other hosts, such as fish, birds, and mammals (...
Tuna in a warehouse waiting to be sold at market.

Tuna at Tsukiji Fish Market

Buyers examine tuna lining the floor of Tsukiji Fish Market in Tokyo, Japan. Ounce per ounce, tuna is one of the most valuable varieties of seafood. In 2012, a single 593lb bluefin tuna sold for $736,000 in a Japanese market. Not surprisingly,...
A deep-water larvacean (aka “sea tadpole”) inside its home.

Deep-Water Larvacean, or “Sea-Tadpole”

In the icy waters of the Arctic , a deep-water larvacean (aka “sea tadpole” because it looks like a tadpole) drifts through the water in its 'house.' This house is made of protein and creates almost a shell around the larvacean and helps to filter...

Inside a Sardine Tornado

A tornado of sardines swirls around diver and photographer Erwin Poliakoff in the Philippines. Sardines are small fish that gather in large schools, a behavior that defends them against predators. As they travel across oceans and up coastlines to...

Plastic Bits from the Gyre

Plastic does not biodegrade; it photodegrades, which means that sunlight breaks it down into smaller and smaller pieces. These bits of plastic and plankton were collected during a 3:00 am manta net tow, and are just a sample of the plankton-like...
A close up view of Phoenix and the rough patches of skin known as callosities that are found on all North Atlantic right whales.

Phoenix’s Callosities

A close up view of Phoenix and the rough patches of skin known as callosities that are found on all North Atlantic right whales . These callosities are inhabited by small amphipods called whale lice and they can be used to identify an individual...
This black coral is more than 4,200 years old. Named for the color of their skeletons, black corals come in many colors.

How old is black coral?

This deep-sea black coral from Hawaii ( Leiopathes sp. ) is more than 4,200 years old. Black corals are named for the color of their skeletons, but the external tissues of black corals come in many bright colors. Explore more in the multimedia...

Restocking Giant Clams

Giant clams are one of the many wonders of coral reefs. They can grow up to five feet wide, weigh over 400 pounds, and live for 100 years! They power all that bulk by filter feeding microbes and particles from the water, siphoning hundreds of...
This queen parrotfish scrapes algae from Caribbean reefs with its parrot-like beak.

Queen Parrotfish

Munch, munch. The queen parrotfish ( Scarus vetula ) scrapes algae from Caribbean coral reefs with its parrot-like beak. While feeding, hard stone and coral inevitably get mixed into its lunch, which in turn gets ground up by the fish and deposited...
Riftia tubeworm (Riftia pachyptila) colonies near hot spring.

Tubeworms on a Hydrothermal Vent

Riftia tubeworm ( Riftia pachyptila ) colonies grow where hot, mineral-laden water flows out of the seafloor in undersea hot springs—such as the Guymas Basin of the Gulf of California at 2,000 meters (6562 feet), where MBARI took this photo. As...

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