GEOLOGY

Detailed explanation-1: -The density of seawater is controlled by temperature and salinity. Clams, sponges and other bottom-dwelling animals are called benthos organisms. The open ocean, regardless of depth, where animals swim or float freely is called the abyssal zone.

Detailed explanation-2: -Open ocean of any depth is called the pelagic zone. Animals in this zone swim or float freely. The photic part of the pelagic zone is home to phytoplankton, zooplankton, and nekton, such as tuna, sea turtles, and dolphins.

Detailed explanation-3: -Open ocean of any depth is called the pelagic zone. The benthic zone includes any sea-bottom surface regardless of its distance from shore and is mostly inhabited by benthos organisms. The abyssal zone is a subdivision of the benthic zone and includes the deep-ocean floor.

Detailed explanation-4: -The pelagic zone, also known as the open ocean, is the area of the ocean outside of coastal areas. Here you will find some of the biggest marine life species. Species here are affected by wave and wind activity, pressure, water temperature and prey.

Detailed explanation-5: -Nekton are all the organisms that swim in the ocean freely.