Massive blue whale seen off the coast of Massachusetts in rare back-to-back sightings Blue whales are the largest animals on Earth, according to the National Oceanic and Atmospheric Administration.

Instead, the sign of a blue whale in the area is typically its blow, which can reach up to 30 feet into the air, and its fluke as it dives back down for food. "From a filming standpoint, it takes ...

Blue whales, which are endangered, can eat up to six tons of krill a day and weigh as much as 200 tons. According to the World Wildlife Fund, a blue whale’s heart is the size of a Volkswagen Beetle.

The blue whale was not the only marine life passengers saw on the trip. Laurino said they observed about 20 fin whales, pilot whales, several dolphin species, a mobula ray that breached the ...