Bluespotted ribbontail rays create blue in a unique way, researchers report in a new study.

Small, shelled, and unassuming, chitons have eyes unlike any other creature in the animal kingdom.

In an unprecedented encounter, a research team successfully engaged in a "conversation" with a humpback whale named Twain.

Coral reefs in one part of the Pacific Ocean have likely adjusted to higher ocean temperatures which could reduce future bleaching impacts of climate change, new research reveals.

Astonishing results published from individual projects of the Tara Pacific expedition studying coral reefs – the entire dataset is made publicly avail....

Porphyrios (Greek: Πορφύριος) was a large whale that harassed and sank ships in the waters near Constantinople in the sixth century.

In and around the Strait of Gibraltar that divides Spain from Morocco, orcas are behaving in odd and aggressive ways.

As seas around Aotearoa heat at an unparalleled rate, scientists are starting to understand what it might mean for marine ecosystems

An unusual blinking fish, the mudskipper, spends much of the day out of the water and is providing clues as to how and why blinking might have evolved during the transition to life on land in our own ancestors. New research shows that these amphibious fish have evolved a blinking behavior that serves many of the same purposes of our blinking.

Researchers have just calculated the value society gets from a common but hidden underwater resource, and found it's way higher than we ever expected.

Researchers in North Carolina have developed software that can determine the best place to rebuild oyster habitats, in an effort to rejuvenate the marine population.

A U.S. agency seeking to restore habitat for endangered fish gave final approval on Thursday to decommission four dams straddling the California-Oregon border, the largest dam removal undertaking in U.S. history.

A previously unrevealed program would use cameras, computer vision, and machine learning to track the carbon stored in the biomass of the oceans.

Imagine you're a big yellowfin tuna, miles from shore out in the blue, swimming around carefree, until you start to feel a little itch near your eye.

There's a certain romance and mystique associated with shipwrecks when seen as ancient artifacts hiding in the gloom.

Each year, enough fishing line to circle the Earth 18 times is lost at sea. This not only harms marine life, but also the livelihoods of fishers worldwide.

For the first time in history, the Alaska Department of Fish and Game has canceled snow crab season due to the dwindling numbers of crabs available. This decision follows a report released in August that showed that snow crab abundance in Alaska is on a steep decline, with stocks down 90 percent in the last two years. Researchers have yet to come up with a cause for this decline, but they have already agreed—climate change is a main factor.

Alaska officials have canceled several crab harvests in a conservation effort that sent shock waves through the the crabbing industry in the region.

Researchers have discovered a 380-million-year-old heart preserved inside a fossilised prehistoric fish. They say the specimen captures a key moment in the evolution of the blood-pumping organ found in all back-boned animals, including humans. The heart belonged to a fish known as the Gogo, which is now extinct.

Lobster nets and pots have become such a threat to the survival of critically endangered North Atlantic right whales that the crustaceans have been “red-listed” as seafood to avoid by a major fish sustainability guide. Fewer than 340 of these whales exist today, including only 80 breeding females. The population is estimated to have dwindled by 28% over the past decade.