Interesting Fact About Largest Animal on the Planet

Size:  Blue whales are the largest animals ever known to have existed on Earth. Adult blue whales can reach lengths of up to 100 feet (30 meters) or more and weigh as much as 200 tons (180 metric tonnes).

Heart size:  The heart of a blue whale is the largest heart of any known living animal. It can weigh as much as 1,300 pounds (600 kilograms) and be the size of a small car.

Vocalizations:  Blue whales are known for their distinct and loud vocalizations, which can be heard across vast distances in the ocean. Their calls can reach levels of 188 decibels, making them the loudest known sound produced by any animal.

Diet:  Despite their enormous size, blue whales are filter feeders. They primarily feed on tiny shrimp-like animals called krill. During feeding season, a single blue whale can consume up to 4 tons (3.6 metric tonnes) of krill per day.

Migration:  Blue whales are highly migratory animals. They undertake long-distance migrations, traveling thousands of miles between their feeding grounds in cold polar waters and their breeding and calving areas in warmer tropical or subtropical waters.

Longevity:  Blue whales have a relatively long lifespan, estimated to be around 70 to 90 years. However, due to their endangered status and various threats, not all individuals reach their full potential lifespan.

Endangered status:  Despite their size, blue whales have faced significant threats from historical whaling activities. Today, they are classified as endangered species and are protected by international agreements.