heterotrophic
the special characteristic of starfish are they have an Exoskeleton and Radial symmetry
Dead Starfish change colour when they die, if you have seen a Starfish in a certain colour, and then it's colour changes it has died. If you are not sure if a certain Starfish is dead and have never seen it in another colour, then it's going to be pretty hard to find out if it's dead or not, but most Starfish are red.
27
tube foot
yes starfish do have suction cups but they are only so small that they can't be seen with the human eye.
Yes of course they can I have seen many starfish with over 1000000 legs and 7 arms. Your an idiot
Phytoplankton, like most plankton, is so small that it can't be seen by the naked eye. When in large groups however the group may give off a green color because of the chlorophyll present.
Phytoplankton and zooplankton
phytoplankton. phytoplankton.
whales
Most phytoplankton are far too small to be seen individually with the human eye. Phytoplankton, like plants, get energy from a process called photosynthesis, and must live in the well-lit surface layers of an ocean, sea, or lake. Some kinds of zooplankton feed on phytoplankton and so do shellfish that live on the ocean floor. Many filter fish also eat it as they cruise the waters.
The scientific name of phytoplankton is phytoplankton. Phytoplankton refers to a diverse group of photosynthetic microorganisms that drift in aquatic environments.