Researchers have discovered a fully warm-blooded fish that lives deep in the Pacific Ocean. Known as opah, the fish produces heat as it swims then distributes the warmth throughout its body, researchers from the National Oceanic and Atmospheric Administration (NOAA) found.
The discovery defies conventional knowledge about fish being cold-blooded creatures, but there are plenty of other weird and even scary creatures in the sea. Here are a few of them:
Carnivorous Coral. Corals typically get nutrients from photosynthetic algae that live within their tissue but not the carnivorous coral, also known as the harp sponge. Discovered off California's coast, this candelabra-shaped coral traps small crustaceans. It spreads a membrane over its prey before using chemicals to slowly digest it. It also reproduces with the aid of sperm packets, which contain spermatophores that float in the water to find another sponge.
