yes its True sexes are separated in phylum echinoderm ..

Are there male and female echinoderms?

Echinoderms are either male or female and become sexually mature after about two to three years. Most release their eggs and sperm into the water where they are fertilized. ... If an arm breaks off some echinoderms, a new arm or even a new echinoderm can regrow.

Do echinoderms use internal or external fertilization are they divided into separate sexes?

Fertilization among echinoderms is external, as gametes are released into the water, where fertillization occurs. The majority of echinoderms are dioecious, containing both males and females.