A special bond forges between a new diver and their instructor; it can be so strong it inspires the student to one day become a teacher. Here's the story of one diver who did just that.
Highly venomous olive sea snakes most often "attack" divers during mating season, chasing them and sometimes even biting them, in what might be a case of mistaken identity.
Tuna, historically overfished, are on the road to recovery, but more sharks and rays are now listed as threatened with extinction, according to this month's IUCN Red List Update.