Slaters, or woodlice, are part of the isopod family. They're a type of crustacean - like crabs and crayfish - but they moved from the oceans onto the land millions of years ago. There are probably 5000-7000 species worldwide, and they've colonised diverse and extreme places from Antarctica to deserts in Australia.
Isopod iridescent (slater) Photo: James Bailey CC BY-NC 4.0
