Common name: common sea urchin

General information

The Edible Sea Urchin, Echinus esculentus, is a species of echinoid native to the northeastern Atlantic Ocean and the Mediterranean Sea. It is known for its distinctive reddish-pink shell covered with short spines. This sea urchin is a popular delicacy in some cultures and is also an interesting addition to the marine aquarium due to its role in the ecosystem as an algae grazer.

Care

In the aquarium, Echinus esculentus requires a tank with plenty of live rock and a stable environment to thrive. They are sensitive to water quality and require consistent levels of salinity, pH, and temperature. A varied diet that includes algae and prepared sea urchin food will help maintain their health and the vibrancy of their spines.

Reproduction

The Edible Sea Urchin reproduces by releasing gametes into the water column, where fertilization occurs externally. In an aquarium setting, breeding is not common, but with optimal conditions, it is possible to observe spawning behavior.

Symbiosis

While Echinus esculentus does not have notable symbiotic relationships like some other marine organisms, it plays a crucial role in controlling algae growth, which can benefit the overall health of the reef aquarium.

Habitat

This species is typically found in rocky subtidal zones and can be found at depths ranging from shallow waters to about 1,200 meters. They prefer cooler water temperatures and are often found in areas with strong currents that bring a steady supply of nutrients.