FALMOUTH, Mass. — A small Massachusetts aquarium has temporarily closed after two harbor seals died within days of each other.

The Boston Globe reported the Woods Hole Science Aquarium on Cape Cod was closing Friday and Saturday after the deaths of beloved seals Bumper and LuSeal.

Aquarium officials said necropsies and other tests are underway to determine the cause of death. They’re closing the facility to let staff recuperate.

Officials said LuSeal became sick July 1 and died of respiratory and heart failure the next day. Bumper died July 13.