A major new study shows long-term ocean warming is steadily reducing fish populations, putting global food security at risk.

According to a new study by the Museo Nacional de Ciencias Naturales (MNCN-CSIC) and the National University of Colombia, chronic ocean warming is driving a nearly 20% annual decline in fish biomass.

There's a lot of fish in the sea, but there may be even more fisherman. Now scientists are trying something different: they are tracking the anglers in order to track the fish. The hope is that they ...

Nighttime drops in ocean oxygen raise energy use in small reef fish. Repeated stress could affect reef health as oceans warm.

Fishing experts are looking for ways to fish in the mesopelagic zone, a layer of water that stretches from 200-1,000 meters (660-3,300 feet) beneath the surface, which has, thus far, remained ...

PORTLAND, Maine — This year’s marine heat waves and spiking ocean temperatures foretell big changes in the future for some of the largest fish in the sea, such as sharks, tunas and swordfish. The ...

A new study by marine biologists reports that seals can essentially act as 'smart sensors' for monitoring fish populations in the ocean's eerily dim 'twilight zone.' Over the past 60 years, marine ...