The giant squid. It can grow up to 60 ft long and weigh close to a ton.
Blue Whale
The largest and heaviest living creature on earth is the blue whale.
The largest heart has to be in the largest creature that has ever inhabited the earth, which is the Blue Whale!
A Whale and I do believe they are also the biggest mammal on earth too.
If your asking which is the biggest animal then a whale is the largest underwater creature and elephants are the largest land mammals
no mostly a isopod is a weird creature
If the creature does not have a backbone then it's an invertebrate. Usually you can tell just by looking at it.
The largest whale on earth, the Blue Whale, can be found in the Southern Ocean which surrounds the continent of Antarctica.
it is a type of creature that is naturally form with its surroundings and does not have a backbone.
An earthworm does not have a backbone.
The Blue Whale is the largest sea creature known to date
Nothing has an external backbone. Some creature have an exoskeleton.A beaver is a mammal and as such is a vertebrate with an internal skeleton.