UltraMarine have just published their 40th issue, where I am please to have an article about the reefs of the Coral Triangle. The countries of Indonesia, Philippines, Malaysia, Papua New Guinea, Solomon Islands and East Timor collectively make up the Coral Triangle, which is known as the centre of the world’s coral reef biodiversity. It is a fascinating area to dive and I hope this article impassions people to experience it for themselves and the will to protect it.