Medusae usually reproduce sexually using eggs and sperm. Depending on the species, cnidarians can be monoecious (also called hermaphroditic), with individuals capable of producing both eggs and sperm, or they can be dioecious, with individuals of separate sexes for gamete production. read more
Cnidaria reproduce sexually or asexually. Some cnidaria are monoecious and only have one sex, while others are dioecious and contain both sexes. Cnidaria is a phylum of animals that includes jellyfish, coral and sea anemones. read more
Cnidaria that carry photosynthetic symbionts may have the opposite problem, an excess of oxygen, which may prove toxic. The animals produce large quantities of antioxidants to neutralize the excess oxygen. Regeneration. All cnidarians can regenerate, allowing them to recover from injury and to reproduce asexually. read more