A comparison of the fast-growing fish-eating Baltic herring (Slåttersill in Swedish) and slow-growing plankton-eating spring- and autumn-spawning Baltic herring. Photo: Leif Andersson. Atlantic and ...

Here's what happens: The plankton eat algae that contains the acid, and then the fish eat the plankton, and the sea lions eat the fish — one thing surviving off another, passing on the toxic acid.

Some of the world's smallest animals and their tiny poops could aid in the fight against climate change. A study reports that clay dust sprayed on the surface of seawater converts free-floating carbon ...