What is carribean sea?

The Caribbean Sea is a tropical sea in the Western Hemisphere, part of the Atlantic Ocean, southeast of the Gulf of Mexico. It is located between latitudes 9° and 22° N and longitudes 89° and 60° W. It covers an area of about 1,063,000 square miles. The Caribbean Sea covers most of the Caribbean Plate and is bounded on the south by South America, on the west and south by Mexico and Central America, and on the north and east by the Antilles: the Greater Antilles islands of Cuba, Hispaniola, Jamaica, and Puerto Rico lie to the north, and a plethora of Lesser Antilles bound the sea on the east. The entire area of the Caribbean Sea, the numerous islands of the West Indies, and adjacent coasts, are collectively known as the Caribbean.

It's lithogenous i believe of course i looked it up.

Ba rock that formed 1,400 million years ago!