Sea urchins are preyed about by many predators that inhabit their marine environment, but also those animals that don't. The main predators of the sea urchin are crabs, large fish, sea otters, eels, birds and humans.
Interphase is the phase during which the growth of the cells take place along with the metabolic activity but the nuclear division in the cell does not occur. The three stages included within the interphase are the G1, S and G2.
The eukaryotic cell cycle can be divided into two parts: interphase and cell division. Interphase is the period during which a cell is not undergoing division. During inter â¦ phase, the cell acquires nutrients from its environment, grows, and duplicates its chromosomes.