While sexes are commonly separate in Cnidaria, hermaphroditism is also known to occur.
According to provided information, sexes are typically separate in Cnidaria; however, hermaphroditism, where individuals possess both male and female reproductive organs, is observed in some species. Certain hermaphroditic species can even self-fertilize. Furthermore, gametes (eggs and sperm) are usually released into the surrounding seawater, where fertilization takes place.
Here's a summary:
- Separate Sexes: This is the most common situation in Cnidaria.
- Hermaphroditism: Some species exhibit hermaphroditism.
- Self-fertilization: Possible in some hermaphroditic species.
- External Fertilization: Gametes are released into the water for fertilization.