Question

What's under an island?

Answer 1

Answer:

Islands like all land masses are made from rock and stone. ... If there was nothing between the "underside" of an island and the sea bed it would sink. However there are islands where there are sea caves that extend far inland, the island of Andros (the one in the Bahamas, not the Greek one) is a good example.

hope it is help full

Answer 2

Answer:

sea is under an island

this is answer