A total of eleven egg-cases are waiting to hatch at the Hastings Blue Reef Aquarium.
The eggs, which were laid at their sister-aquarium in Bristol as part of a captive breeding programme, belong to the undulate ray which is now considered to be endangered in the wild.
The eggs should start to hatch out over the summer.
Blue Reef’s Curator Chris Ireland said: “Many species of European sharks and rays are increasingly coming under threat of extinction in the wild. It would be great if we were able to successfully breed this particular species in captivity."