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.

Complete guide to diving the Northern Red Sea: SS Thistlegorm, Carnatic, Tiran reefs and Ras Mohammed. Liveaboard, nitrox included and the world's best wrecks.

Guide to diving in the Azores: blue shark, mako shark, sperm whales, mobula rays, and dolphins in the North Atlantic. Princess Alice Bank, Gordon's Bank, and how to experience it.

Divevolk or dedicated underwater camera? An objective comparison with no brand sponsorship: advantages, disadvantages, price, quality and which diver profile each suits.

Complete guide to diving Komodo National Park: sites, marine life, currents, best season and practical tips by an SSI instructor with real experience in the area.

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.

Coral is dying faster than we can document it. What bleaching is, why it happens and what you can do about it starting today — including adopting a coral through the BTO app.

Complete guide to managing and improving your air consumption in diving. SAC, rule of thirds, common mistakes and real exercises explained by an SSI Full Cave Diver instructor.