Definition that contains abed
- buoy bright-colored; a float attached by rope to the seabed to mark channels in a harbor or underwater hazards
- continental shelf the relatively shallow (up to 200 meters) seabed surrounding a continent
- continental slope the steep descent of the seabed from the continental shelf to the abyssal zone
- bathyal district the steep descent of the seabed from the continental shelf to the abyssal zone
- bathyal zone the steep descent of the seabed from the continental shelf to the abyssal zone