1. cave2. cavern3. headland4. longshore drift5. sand dune6. sea arch7. stalagmite
1.a natural underground void large enough for a human to enter5. a deposit of windblown sand that forms when wind meets an obstacle3. a part of the shore that sticks out into the ocean; it's made of harder rock that resists erosion by waves6. a feature of wave erosion that forms when waves erode a layer of softer rock that underlies a layer of harder rock4. the process by which waves repeatedly hit the beach and some of the beach sediment moves down the beach with the current2.a connection or system of underground caves formed chemically through things like acid rain7. a deposit that forms from the cave floor as slow dripping carbonic acid builds up in a cone-shape