Causes of Climate Change. Climate change is a long-term shift in weather conditions identified by changes in temperature, precipitation, winds, and other indicators.
Answer by Marcin Wojtkowski. Confidence votes 167. Most sea star (starfish) species are generalist predators, some eating bivalves like mussels, clams, and oysters; or any animal slow enough to be unable to evade the attack (e.g. dying fish). Some species are detritivores, eating decomposed animal and plant material, or organic films attached to substrate.
Each sea star had hundreds of tiny feet on the bottom of each ray. These are tube feet, or podia. These tiny feet can be filled with sea water. The vascular system of the sea star is also filled with sea water.By moving water from the vascular system into the tiny feet, the sea star can make a foot move by expanding it.This is how sea stars move around. Muscles within the feet are used to retract them. Each ray of a sea star has a light sensitive organ called an eyespot.ea Stars Sea stars (group name Stelleroidea) are sometimes called starfish, though they are not real fish (they lack both vertebrae and fins). There are two sub-types of sea stars: 1  Asteroideas are the true sea stars and sun stars. 2  Ophiuroideas are brittle stars and basket stars.