Why not an island?
Driftwood
Oceanic Crust
you mean a peninsula?
If a boat or ship is very far from land and all you can see is ocean, you could call that mid ocean. Being surrounded by ocean you would be in the middle of ocean.
Some call it a beach. Some call it a coastal plain.
They would be considered Land-Locked
Straight
You are possibly thinking of a gulf.
i dont no
The edges of the continental plates under water are called the continental shelf.
The ocean is older than land because it formed the land.
Sino-Ocean Land was created in 1993.