The octopus doesn't have one brain — it has nine. It edits its own RNA, dreams in colour and each arm thinks independently. What real science says about the strangest animal in the ocean.

Everything about the Mola Mola or ocean sunfish: what it is, how it lives, why it's so strange and where to dive with one. Crystal Bay in Nusa Penida, Bali is the best place in the world.