As the number of offshore wind farms continues to grow, the farms may affect both seals and their prey.
One of the first predators of its day, the creature sported compound eyes, body armor and two spiky claws for grabbing prey.
A new study reveals that these fish fluoresce more in deep water, a technique that allows them to convert blue-green light into red or yellow light.
The school of fish measured about 50 feet wide and 325 feet long, and could have contained anywhere from 1 million to 100 million fish.
Study of stickleback fish finds they recognize each other if they have been housed together.
Ferocious-looking sand tiger sharks appear to respect, and are even curious about, scuba divers who respect them.
New research suggests Chilean devil rays warm themselves in the sun at the surface then dive down to extreme depths in search of food.
We can't see them in the water, but tiny organisms -- many of which are invisible to the unaided human eye -- make up 98 percent of the oceans' biomass and cause most of the biological activity there.
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