Sea otter are nekton and plankton; they can float and swim.
A sea urchin is classified as benthos. Benthos refers to organisms that live on or near the bottom of a body of water, and sea urchins typically inhabit the ocean floor, often among rocks or coral. In contrast, plankton are free-floating organisms, and nekton are active swimmers.
nekton
benthos - it lives on the sea bed and "swims" occassionally.
Zooplankton (pronounced ZO A PLANKTON) is plankton
Nope. They are nekton because they actively swim and catch their food.
benthos
Oops that definition was for nekton. Sorry! Nekton are any sea animals that live on the ocean floor, from the continental shelf to the abyssal plain. Starfish, coral, sea urchins, and crabs are included.
Dolphins are nekton because they actively swim and catch their food.
Sea urchins are classified as benthic organisms, meaning they live on or near the ocean floor. They are not plankton, which are typically small, drifting organisms in the water column, nor are they nekton, which are actively swimming animals like fish. Sea urchins play an important role in their ecosystem by grazing on algae and contributing to the structure of marine habitats.
A tube worm is classified as benthos. Benthos refers to organisms that live on or near the seabed, and tube worms typically inhabit deep-sea environments, often attaching themselves to the ocean floor or hydrothermal vents. Unlike nekton, which are swimming organisms, and plankton, which are usually drifting or floating in the water column, tube worms remain anchored to their substrate.
a sea cucumber is a benthos because it does not move is just stays on the ocean floor
Plankton aren't turtules and plankton aren't turtles.