How the clownfish and anemone symbiosis works: why it doesn't get stung, what each partner gains, sex change and the threats they face.

Everything about the bull shark in Playa del Carmen: why it arrives every winter, why its fearsome reputation is a myth, and how the dive is done safely and responsibly.

What happens every winter in the fjords of northern Norway: orcas hunting in family groups, humpback whales, herring and the northern lights. The most extreme natural spectacle in Europe.

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.

What is the Sardine Run in Mag Bay, Baja California Sur: marlin, whales, sea lions and dolphins hunting together. When to see it and how to experience it from the water.

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.