The largest shell belongs to the giant clam, Tridacna gigas, whose shell can grow to several hundred pounds, with a length of about 5 feet.
It is a giant clam.
They are different creatures
The giant clam.
the ocean
no
The symbiotic algae (zooxanthellae) that lives in Tridacna clams receive a food source and a safe place to live in exchange for providing the clam with a food source.
YES
no
the average life of a giant clam is about 2,000 years. you might think I'm kidding, i know that answers.com is not the most reliable place in the world. but that's true. i did a research project on those for school once. they live 2,000 years.
the giant clam
wait untill it closes then run up to it and you have to avoid the clam from closing.