See text Loveniidae is a family of heart urchins in the order Spatangoida.

These sea urchins are called "heart urchins" due to the specific shape of their test, looking like a heart when seen from below (more or less depending on the genus).

The mouth is located between the two cheeks, and the anus is below the tip.

According to the World Register of Marine Species:

This article about a sea urchin is a stub.