Question

what is the external feature of the starfish​

Answer 1

Answer:

Starfish are marine invertebrates. They typically have a central disc and usually five arms, though some species have a large number of arms.

Answer 2

Answer:

Starfish are marine invertebrates. They typically have a central disc and usually five arms, though some species have a larger number of arms. The aboral or upper surface may be smooth, granular or spiny, and is covered with overlapping plates.