Adult Blue Whale (Balaenoptera musculus) fluke-up dive (note the notches and scars in the flukes) in the offshore waters of Santa Monica Bay, California, USA. The Blue Whale is the largest animal to ever live on the planet Earth.

Long-beaked Common Dolphin (Delphinus capensis) surfacing in the Gulf of California (Sea of Cortez), Mexico.

Adult humpback whale Megaptera novaeangliae underwater in the AuAu Channel between the islands of Maui and Lanai, Hawaii, USA Each year humpback whales return to these waters in the winter and spring to mate and give birth to their calves In the summe

Long-beaked Common Dolphin (Delphinus capensis) surfacing in the Gulf of California (Sea of Cortez), Mexico.

Humpback Whale (Megaptera novaeangliae) calf pec-slapping amongst adult humpback whales (including its mom) in Southeast Alaska, USA. Pacific Ocean.

Long-beaked Common Dolphin (Delphinus capensis) surfacing in the Gulf of California (Sea of Cortez), Mexico.

A curious adult humpback whale Megaptera novaeangliae approaches the boat underwater in the AuAu Channel between the islands of Maui and Lanai, Hawaii, USA Each year humpback whales return to these waters in the winter and spring to mate and give birth

Long-beaked Common Dolphin (Delphinus capensis) leaping in the Gulf of California (Sea of Cortez), Mexico.

Humpback whale Megaptera novaeangliae fluke-up dive in the AuAu Channel between the islands of Maui and Lanai, Hawaii, USA This is probably an adult bull note the heavy scarring from competition between adult males to mate Each year humpback whales

Adult humpback whale Megaptera novaeangliae underwater in the AuAu Channel between the islands of Maui and Lanai, Hawaii, USA Each year humpback whales return to these waters in the winter and spring to mate and give birth to their calves In the summe

Humpback whale Megaptera novaeangliae underwater in the AuAu Channel between the islands of Maui and Lanai, Hawaii, USA Each year humpback whales return to these waters in the winter and spring to mate and give birth to their calves In the summer and

Curious humpback whale Megaptera novaeangliae approaches the boat underwater in the AuAu Channel between the islands of Maui and Lanai, Hawaii, USA Each year humpback whales return to these waters in the winter and spring to mate and give birth to thei

Balaenoptera, blooded, cetacea, cetacean, Hawaii