GENERAL HISTOLOGY

Detailed explanation-1: -A starfish has eyespots that cannot see much in the way of details but can detect light and dark. These eyespots are at the tip of each of the starfish’s arms. That means that a 5-armed starfish has five eyespots, and a 40-armed starfish has 40!

Detailed explanation-2: -Starfish have eyes-one on the end of each of their arms-but what they do with them was anyone’s guess. Starfish have historically been thought of as simple animals.

Detailed explanation-3: -Most starfish possess a crude eye at the tip of each arm. These compound eyes contain multiple lenses called ommatidia, each creating one pixel of the total image the animal sees. Tropical starfish eyes have been shown to be capable of forming crude images, which allow these animals to stay close to their homes.

Detailed explanation-4: -Judging from its arrangement in Euglenophyta cells, the eyespot is generally considered to act as a shading device to enable the photoreceptor PAC in the PFB to discriminate the light direction during helical swimming (Kreimer, 2009).

Detailed explanation-5: -The arms are covered with pincerlike organs and suckers that allow the animal to slowly creep along the ocean floor. Light-sensitive eyespots on the tips of the arms help the sea star find food.