This amazing encounter with a tope shark and its prey happened in Azores, Portugal, roughly 900 miles west of mainland Europe.

Vancouver Island, Canada, is a year-round dive destination, but there's a certain time of year when you're more likely to spot one of these Pacific spiny lumpsuckers.

This year-round Colombian destination, best-suited for advanced divers due to strong currents, is a prime site for spotting huge schools of fish.

Home to leopard seals, among the most elegant marine mammals, this Antarctic dive spot earns top marks for its photogenic residents.