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Sargassum, a smelly, brown seaweed that can cause respiratory irritation and other health problems, hit record levels in the Caribbean and the Gulf of Mexico last month.
The ramming behavior might help younger orcas more easily digest their food, while also allowing other orcas to have a little fun, researchers say.
Human activity is draining oxygen from marine waters, and it's past time to take this crisis seriously.
If you see a whale floating upside-down along Australian coasts, please leave it alone. They're just really tired, scientists say.
An advanced research vessel off the coast of Brazil has ID’ed a new cousin to crabs and lobsters, nine new jellyfish, and two gigantic single-celled organisms visible to the naked eye.
