If you already have a wired land sea-a sea of potential tsunami. Flee to higher immediately. But if they are on a ship at sea, bringing the boat to go out in the middle of the ocean depths is safe.
If you go to the beach Then there was an earthquake in the sea Possible tsunami. To flee to higher ground immediately. If you are on a ship at sea, take a boat out to the middle of the deep sea is safe.
If you go to the seaside, and an earthquake at sea may be the tsunami run is on high. But if on a ship at sea to bring the ship and the sea will be safe.