Sponge Bobby 's was found with breathing difficulties in November . The six-month-old female seal was released into the wild in March . Experts believe she was struck by a boat or a jet-ski off Dorset the coast . The young seal had travelled more than 200 miles since her March release .
Sponge Bobby was found with breathing difficulties in November . The six-month-old female seal was released into the wild in March . Experts believe she was struck by a boat or a jet-ski off Dorset the coast . The young seal had travelled more than 200 miles since her March release .