How do humans help blue whales survive?

Blue Whales have many benefits to us humans. They help eat the krill in the ocean. If we didn't have blue whales, there would be a ton of krill in the ocean. Blue Whales have to eat about 3 tons of krill everyday.

Did You Know: That blue whales are in the endangered category and they are only an estimate of 2,000 to 5,000 left!