Blue Whale With Diver

by Anonymous, via Creative Commons


SPECIES-  Blue Whale  (Balaenoptera musculus)

CURRENT RANGE- North Atlantic, North Pacific, Antarctic and Indian Oceans

CURRENT THREAT- Whaling, Global Warming


WHERE YOU CAN SEE THEM- Gulf of St Lawrence, Southern California, Chiloé Island (Chile) and Sri Lanka


What Is It?

The largest animal known to have existed in the entire history of our planet, for one. Though difficult to gauge because of their monolithic size, Blue Whales are estimated to weigh up to 190 metric tons (or 210 short tons) and range up to 110 feet in length. Part of the suborder of baleen whales,  their diet consists almost exclusively of the tiny crustaceans known as krill, eating up to 40 million (or around 7,900 pounds) in one day. Bluish grey on top, with a lighter underbelly, the Blue Whale body seems long and skinny compared to baleen cousins such as Humpback Whales, Bryde’s Whales and Minke Whales. They have a flat, u-shaped head, and can travel at speeds up to 31 mph over short bursts. But they tend to travel solo or in pairs, rather than pods.


Blue Whale Tail Fluke

photo by Mike Baird via Creative Commons


Why Are They Endangered?

The Blue Whale was ubiquitous in nearly every ocean on the planet until the early 1900s, with an estimated population of over 200,000 in Antarctica alone. But during the century of whaling’s heyday they were hunted nearly to extinction before ultimately getting international protection from the International Whaling Commission in 1966. Even with protection, their global numbers were estimated to be between 5,000 and 12,000 total in 2002, with five major groups in various oceans around the world. In addition to illegal whaling, other threats to the species include collisions with ocean vessels, getting entangled in fishing nets, and the impact of climate change on their krill food supply.


What’s Being Done to Save Them?

Fortunately, the Blue Whale is gradually starting to see its numbers take a turn for the better. In addition to being on the IUCN Red List, the United States National Marine Fisheries Service currently lists them under the Endangered Species Act, ensuring their protection under law. Additionally, wildlife protection charities such as Save The Whales and the Sea Shepherd Conservation Society serve as watchdogs for the species, helping to fund conservation efforts and confronting illegal whaling activities head-on via direct action.  With an increasing interest in ecotourism activities that allow travelers to see the whales in their natural habitat, hopefully this spectacular species will remain safe for centuries to come.  –Bret Love


If you enjoyed reading our Endangered Species Spotlight on the Blue Whale, you might also like: 




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