A new study offers the first direct evidence that deep-dwelling mesopelagic fish, which account for up to 94% of global fish biomass, excrete carbonate minerals at rates comparable to shallow-water ...

The bumphead sunfish (Mola alexandrini) is one of the strangest and most impressive giants in the ocean. With a flattened, ...

New research sheds light on the overlooked contribution of the ocean’s most abundant fish to marine carbon cycling. The findings open new avenues for studying deep-sea carbon dynamics and may improve ...

Deep-sea fish adapt to some of the most extreme conditions on Earth. New research analyzing their evolution finds the same mutation across fish species that have evolved on separate timelines — ...

These three fish are freaks, phantoms and mysteries of the deep. Here’s what we’ve learned from the rare glimpses we’ve had of their lives. The deep sea is one of Earth’s final frontiers. Given its ...

Ted Judah went diving off McAbee Beach in Monterey Bay when he caught sight of a 'silvery knife blade undulating thing,' ...

The ongoing decline in ocean oxygen levels is intensifying due to climate change, significantly impacting marine ecosystems, including mesopelagic fish populations. This could disrupt marine food webs ...

The ocean is full of surprises, and scientists are still finding creatures that seem almost unreal. From tiny reef animals to ...

Scientists on an expedition to the South Sandwich Islands near Antarctica have recorded horrifying videos of parasitic copepods feasting on the head of a deep sea rattail fish. When you purchase ...

The fish was found at 200 to 2,000 meters below the surface. At least 16 types of recently discovered deep-sea fish are among the darkest creatures ever found, according to a study published Thursday.