The term "seabed" refers to the bottom surface or floor of a body of water, specifically an ocean or sea. It includes all the geological features and sediments that are present on, in, or beneath the water's surface. The seabed is often composed of various types of rock formations, sand, silt, clay, and organic material such as shells and plant remains. The study of the seabed is known as benthic research, which involves examining the physical, chemical, biological, and geological characteristics of the ocean floor to better understand marine ecosystems and their interactions with human activities.