California gray whale calf (Eschrictius robustus), beside boat being touched by tourists in San Ignacio Lagoon, Baja California, Mexico, North America

Mother elephant and calf in woodland in Moremi National Park, Botswana

Elephants in Moremi National Park, Botswana

A mixed Black Browed Albatross (Thalassarche melanophris) and Rockhopper Penguins (Eudyptes chrysocome) nesting colony on Westpoint island in the Falkland Islands off Argentina, in South America, being watched by a group on a wildlife tourist trip.

King Penguins on Salisbury Plain, South Georgia, with passengers from an expedition cruise.

Antarctic fur seal baby (Arctocephalus gazella) interacting with a photographer, Stromness Bay in South Georgia

King Penguins at Gold Harbour, South Georgia, with passengers from an expedition cruise.

King Penguins at Gold Harbour, South Georgia, with passengers from an expedition cruise.

Thrill seekers experience cage diving with Galapagos sharks, Carcharhinus galapagensis, North shore, Oahu, Hawaii, USA

Whitetip reef shark, Triaenodon obesus, Namu atoll, Marshall Islands (N. Pacific).

Red (Lace) coral, Distichopora violacea, feather stars, and juvenile gray reef shark, Carcharhinus amblyrhynchos, Ailuk atoll, Marshall Islands, Pacific

Young woman on safari jeep at Udawalawe National Park, Sri Lanka

A diver swims between a sperm whale (Physeter macrocephalus) and her cub in the waters of the Caribbean island of Dominica.

African elephant (Loxodonta africana), silhouette at sunset, Nxai Pan, Nxai Pan National Park, Botswana, Africa

Two teenagers sitting on an Asian Elephant (Elephas maximus), being sprayed with water from the trunk, Kanchanaburi, Thailand, Asia

Snorkeling in Shark Alley and Hol Chan Marine Reserve, Ambergris Cay, Belize

Young woman snorkeling with a school of fish, Water Cay, Utila, Honduras

Hawaii, Maui, Atlantis Submarine passes small coral bed with sea life.