Two playful deer engaging with one another in Nara Park, Nara, Honshu, Japan

Captive Galapagos giant tortoise (Geochelone elephantopus) at the Charles Darwin Research Station, Galapagos, UNESCO World Heritage Site, Ecuador, South America

Guests from the Lindblad Expeditions ship National Geographic Sea Bird in Southeast Alaska, United States of America, North America

Tourists hand-feeding tarpon (Megalops atlaticus), at feeding station inside the Mesoamerican Barrier Reef, Belize

The endemic Galapagos marine iguana (Amblyrhynchus cristatus) swimming in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Blue Whale (Balaenoptera Musculus) breaching, extremely rare unusual image. Monterey, California, Pacific Ocean. MORE INFO: This Blue Whale was engaging in courting/fighting behaviour with another Blue Whale. Both animals were moving much faster than normal, chasing each other, & breaching repeatedly.

Blue Whale (Balaenoptera Musculus) breaching, extremely rare unusual image. Monterey, California, Pacific Ocean. MORE INFO: This Blue Whale was engaging in courting/fighting behaviour with another Blue Whale. Both animals were moving much faster than normal, chasing each other, & breaching repeatedly.

Blue Whale (Balaenoptera Musculus) breaching, extremely rare unusual image. Monterey, California, Pacific Ocean. MORE INFO: This Blue Whale was engaging in courting/fighting behaviour with another Blue Whale. Both animals were moving much faster than normal, chasing each other, & breaching repeatedly.