The Irish Seal Sanctuary has received reports of a number of suspicious deaths of seals in Donegal.
Five dead seals were found near Rosbeg and one at Narin.
Meanwhile there has also been three seals found dead in Waterford, plus a number of anecdotal reports of dead seals in Wexford and Clare.
The ISS says the National Parks and Wildlife Services have been informed of the concerns around the deaths of the animals.
PRO of The Irish Seals Sanctuary, Pauline Beads, said it's not know if the seals died naturally or were killed: