Katja Dives with an Elasmosaurus

To this day off the coast of Bura Nea, a volcanic island east of the Pacific Marshalls, you can catch the annual migration of the elasmosaurus as they make their way to and from shallowly submerged atolls where they raise their young. Despite their magnificent size they are perfectly harmless towards humans and safe to swim with. The real danger comes from the lurking moanasaurus that follow the migratory flocks.
Pictured here, Ukrainian free-diver Katja Sedovar swims beneath a middle-sized female.