a big shell
the worlds largest shells is the conch.
The largest shell is Tridacna gigas or the giant clam shell. There is also a pretty large shell in Australia called the Australlian Trumpet shell. And I am sure prehistoric shells were even larger then the ones of today.
these are the worlds largest largest public and private businesses 1 Walmart 2 Royal Dutch Shell 3 Exxon Mobil Corporation
Big!
One of the world's most expensive shell is Connus gloriamaris
geko
shot grable may 25, 1953
Shell is the U.S.'s largest natural gas supplier
The worlds most expensive shell would probably be the sunrise shelll seliing up to 1,000 dollars.
The largest shell in the Philippines is the Tridacna gigas, also known as the giant clam. It can grow up to 4 feet in length and is a protected species due to its status as an endangered marine organism.
The largest atom, francium, has 7 electron shells. Each electron shell can hold a certain number of electrons based on the formula 2n^2, where n is the shell number.