if you mean the heaviest invertabre than it is the giant clam.
Giant Squid
The hippo is the 2nd heaviest land animal. It tips the scales at 8,000lbs.
The heaviest animal is the blue whale. It weighs about 150 tons.
SW - This can't be true! What about all the other whales? The second heaviest animal in the world is an African elephant, The heaviest being a Blue whale at 190tonns
The European Bison
sperm whale.
dem bones are the heaviest bones in the skeleton
The pelvis, or hipbone, is the largest and heaviest bone in the human skeleton.
The hippo is the 2nd heaviest land animal. It tips the scales at 8,000lbs.
The heaviest animal is the blue whale. It weighs about 150 tons.
The world largest and heaviest animal is the Blue whale weighing in at 418,878 lbs (190,000 kg)
The heaviest animal is the blue whale. Giant squid isn't even Close.
the moose.
SW - This can't be true! What about all the other whales? The second heaviest animal in the world is an African elephant, The heaviest being a Blue whale at 190tonns
The African elephant is the largest and heaviest land animal alive today. It can weigh over 7000 kilograms.
an elephant
Animals with no skeleton are called invertebrate e.g Worm and very smaller organism
any mammal has an internal skeleton but bugs have an exoskeleton