This 2020 NASA image may look like the outline of a giant squid, but it’s actually the joining of two bodies of water on Madagascar’s northwestern coast. Here, the salt-laden Mozambique Channel melds with the freshwater Betisobka River and creates the Bombetoka Bay. All of the little islands and sandbars created by the joining of two sediment-filled bodies of water give this stunning landscape the look of a huge tentacled mollusc.