9Fish Rock Cave, Australia

Grey Nurse Sharks. Located off the east coast of Australia, the 125 metre long Fish Rock Cave is home to some of the most sought after marine life in the world.

It is renowned for its high number of grey nurse sharks who reside here all year round, so swimming with these graceful creatures is almost a guarantee. In the summer months, grey nurse sharks rest in the shallow end of the cave, making for fantastic diving.