A more thorough explanation:

SEABED

The seabed is the bottom of the ocean. It is the ground that lies beneath the water. Countries can claim ownership of the seabed if it is located within their territorial waters.

One example of the seabed is the Great Barrier Reef in Australia. The reef is made up of thousands of individual coral reefs that sit on the seabed. Another example is the Mariana Trench, which is the deepest part of the ocean and is located in the western Pacific Ocean.

These examples illustrate the definition of the seabed because they are both parts of the ocean floor. The Great Barrier Reef is a collection of coral reefs that sit on the seabed, while the Mariana Trench is a deep trench that is part of the seabed. Both of these examples are also located within the territorial waters of different countries, which means that those countries could potentially claim ownership of the seabed in those areas.