Red-Eye Medusa

Polyorchis penicillatus

Polyorchis penicillatus, commonly known as the Red-eye Medusa, is a pelagic jellyfish found in the Eastern Pacific and Arctic regions, thriving in subtropical to polar waters. This species reaches a maximum length of 10.0 cm and is typically encountered in bays and coastal waters, often at depths shallower than 40 meters, with most sightings occurring under 30 meters. Its distinctive red eyes help differentiate it from other jellyfish species, making it easier for divers to identify during encounters. The diet of the Red-eye Medusa primarily consists of benthic crustaceans and demersal zooplankton, which it captures while drifting through the water column. The species is known only in its medusoid stage, with the polyp stage remaining unknown. While specific details about its breeding habits are not well-documented, jellyfish generally reproduce by releasing eggs and sperm into the water column, leading to the development of larvae. Diving with Polyorchis penicillatus can be an intriguing experience, as divers may observe these jellyfish gracefully drifting through the water. Their translucent bodies and red eyes create a unique visual against the backdrop of the ocean. However, encounters can vary, and divers should maintain a respectful distance to avoid disturbing their natural behavior. The conservation status of this species is currently not evaluated.