The Greenland shark makes its home in the icy arctic waters around Greenland and Iceland. So researchers were shocked when they found one of the ocean giants apparently taking a tropical vacation in the coral reefs off the coast of Belize.The Greenland shark makes its home in the icy arctic waters around Greenland and Iceland. So researchers were shocked when they found one of the ocean giants apparently taking a tropical vacation in the coral reefs off the coast of Belize.