Question

a new energy source found in the ocean that is currently very costly to obtain

Answer 1

a new energy source found in the ocean that is currently very costly to obtain would be Methane Hydrates. although the high cost, represents a potentially vast Methane resource for both the United States and the world.                HOPE THIS HELPS

Answer 2

A new energy source found in the ocean that is currently very costly to obtain is methane hydrates.