Sea lice are copepod crustaceans. They have been around for millions of years and have ... But in aquaculture, fish are kept at unnaturally high densities, so the parasites will exploit that, and ...

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 irritation, redness, and welts on the ...

First thing's first. Sea lice aren't lice at all. They're tiny baby jellyfish, so small you can't even see them -- about the size of a grain of pepper. And just like their grownup counterparts ...