The Blue Whale is the largest animal in the world to have ever lived on earth. They can grow to be as large as a jumbo jet. The largest mammal in the world is found in all the world’s oceans and often swim in small groups or alone.
Blue whales travel in groups called pods.
The largest animal known to have existed reaches a weight of about 200 US tons and a length of 98 feet (30 m).
The blue whale’s heart weighs as much as a small car and their tongues alone can weigh as much as an elephant. They can eat four to eight tons of tiny shrimplike animals called krill per day.
They mainly catch their food by diving and descend to depths of approximately 500 m. They swim in the ocean at over 8km/h and can reach speeds of over 30km/h.
A blue whale calf weighs two tons (1,814 kilograms) at birth and gains an extra 200 pounds (91 kilograms) each day of its first year.
Blue whales are currently classified as endangered on the World Conservation Union (IUCN) Red List.
The African Elephant is the largest animal in the world on land. They are also known as the African savanna elephant, the largest living terrestrial animal.
They can weigh up to 2.5 to seven tons; they can have a shoulder height of 8.2 feet to 13 feet (4.2 m). Their trunk is so powerful and precise that it can carry calves and also be used for more delicate acts like picking flowers.
The Elephant also has the longest pregnancy at 22 months. New-born calves weigh around 90kg and are about 3 feet tall. Baby elephants are dependent on their mother’s milk for the first 2 years of their life.
They can recognize themselves- something very few animals can do. They sleep only 2 or 3 hours each day. They make powerful low-frequency rumblings to communicate over a long distance.