Flower urchins are dioecious (having separate male and female individuals), but it is almost impossible to determine the sex of an individual by external characteristics alone.
However, it is almost impossible to determine the sex of an individual by external characteristics alone. Flower urchins are dioecious (having separate male and female individuals).
Flower urchins are dioecious (having separate male and female individuals). However, it is almost impossible to determine the sex of an individual by external characteristics alone.
Flower urchins are dioecious (having separate male and female individuals). However, it is almost impossible to determine the sex of an individual by external characteristics alone.