They aren't very dense, so they float.
Flagella
To keep from sinking and capture more light.
It is called the "Swim Bladder".
The force that stops a car from sinking into the road is the normal force, which is the force exerted by the road surface in the opposite direction to the force of gravity. This force supports the weight of the car and prevents it from sinking into the road.
The force of buoyancy, which is exerted by the water on the bottle and is equal to the weight of the water displaced by the bottle, prevents the bottle from sinking. This force acts in the opposite direction to the weight of the bottle, keeping it afloat.
no,but they have oil rich livers.It prevents them from sinking when they are not swimming. but some fishes have swim bladders. ex:guppies,goldfish..........
Phytoplankton and zooplankton
phytoplankton. phytoplankton.
whales
The scientific name of phytoplankton is phytoplankton. Phytoplankton refers to a diverse group of photosynthetic microorganisms that drift in aquatic environments.
Snow shoes are broad in order to spread the weight over a larger portion of the snow, which prevents you from sinking into the snow.
Copepods will eat phytoplankton.