Medically reviewed by William Truswell, MD Sea lice bites are an itchy rash caused by jellyfish larvae that get trapped in swimsuits after swimming in the ocean. The larvae release toxins that trigger ...

Relatives of the sea anemone and every bit as splashy, corals display hues ranging from brilliant orange and deep salmon to pale pink and subtle violet. Often referred to as “rainforests of the sea,” ...

Researchers have made a breakthrough in understanding how anemonefish can live safely among sea anemones without being stung by their venomous tentacles, solving a century-long mystery.