Coming in at number 1- blue whale:
The Blue Whale is the biggest creature to ever live on earth, even bigger then the biggest dinosaurs. As with all baleen whales, the females are much bigger then the males. The Largest Blue Whale ever measured was a female that weighed over 171,000 kgs. The Longest whale ever measured came in at over 110 feet long.
#2 - African elephants:
The African Elephant is the largest land animal in the world. No other land animal even comes close to the size of these large creatures. Male elephants can weigh up to 16,500 lbs and can grow up to 20 feet long.
And, #3: Whale sharks:
The Whale Shark is the largest living fish on earth. This shark can be found in tropical and warm oceans around the world, living in the open sea. The largest whale shark ever recorded was 41 feet long and it weighted over 47,000 lbs. Although they look big and scary, the whale shark is a very calm and peaceful creature that feeds mostly on plankton, krill, and macro-algae.
https://safarisafricana.com/heaviest-animals-in-the-world/