Because it possesses a climate different than the land below, making it seem like an island.
Answer:
eclipse help in the past by telling how the climate will be and in our understanding it shows how the planet rotate for it to come and meet each others ( and sun )
hope I tried to answer the qn
I would say a tundra,
a tundra us a freezing place so hardly any plant life can grow, and it's always cold.
The waves crash into the sand, sometimes creating dunes, and it can also wash some sand out into the ocean. Hope this helps!