What sorts of adaptations do nektons and benths possess that allow them to survive there?

Nektons, which include swimming organisms like fish and squid, possess adaptations such as streamlined bodies for efficient movement through water, specialized fins for maneuverability, and gills for extracting oxygen. In contrast, benthos, which are bottom-dwelling organisms like crabs and sea stars, have adaptations such as strong appendages for navigating the seafloor, camouflaging coloration for protection, and the ability to burrow into sediments for shelter and access to food. Both groups also exhibit physiological adaptations to cope with varying pressure, temperature, and salinity in their respective habitats.