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.

Scientists at the Florida Aquarium have made a breakthrough in the race to save Caribbean coral: For the first time, marine biologists have successfully reproduced elkhorn coral, a critical species, using aquarium technology. It’s a historic step forward, and one they hope could help revitalize Caribbean ecosystems and could pay humans back by offering extra protection from the fury of hurricanes.

Australia took a step Thursday toward combating climate change when the lower house of its Parliament passed a bill committing to reducing carbon emissions by 43% from 2005 levels by the year 2030, and reaching net-zero emissions by 2050.

Coral cover has bounced back across two thirds of the Great Barrier Reef

Military sonar can have a serious effect on some ocean animals. Could natural noises produced by sealife be used to locate undersea threats?

PAGE, Ariz. (AP) — Barrett Friesen steers a motorboat toward the shore of Lake Powell, with the Glen Canyon Dam towering overhead. Pale “bathtub rings” line the canyon’s rocky face, starkly illustrating how water levels have slumped in the second-largest U.S.

Climate change is threatening the world’s corals, but removing seaweed—like weeding a garden—can give some reefs a boost.

Bonefish off the coast of Florida have tested positive for a cocktail of pharmaceutical drugs, including anti-depressants and blood pressure medications, according to a new study.

Scientists in the Klamath Basin have begun prepping for the return of an untamed river...

Prof Terry Hughes says he believes bleaching is under way as the Australian government conducts monitoring flights over 2,300km reef

About 51 trillion microplastics are floating in the surface waters of oceans around the world. Originating from various types of plastics, these tiny fragments (less than 5 millimeters in length) pollute natural ecosystems. Hundreds of studies have surveyed plastic debris on the surface or near surface of the ocean. However, these studies only "scratch the surface," and do not provide a complete inventory of what's lurking beneath.