On one occasions , grey seals were spied eating porpoises they had killed . Although killer seas are known to lurk in the waters off the continent , this is the first time they have been seen around Britain . The footage , the first in the world , was shot by a wildlife cruise company , off the coast of Pembrokeshire .
On four occasions , grey seals were spied eating porpoises they had killed . Although killer seas are known to lurk in the waters off the continent , this is the first time they have been seen around Britain . The footage , the first in the world , was shot by a wildlife cruise company , off the coast of Pembrokeshire .