Which of the following types of trash, found in the ocean, typically accumulates at the surface because it doesn't readily sink or biodegrade?

Plastics.

Explanation:

These are plastics. Plastics are neither sinkable( being lighter) nor they are biodegradable( they do not degrade by themselves are remain in the ecosystem for years). Thus, causing alot of damage to marine life forms. Makinf to difficult for them to gain sufficient oxygen and sunlight.

answer; depression and breathing related sleep disorder(independent);

the octopus by frank norris