First, the team taught a harbor seal (Phoca vitulina) named Filou, who lived at the Marine Science Center, Rostock, to submerge his head while blindfolded as they released a spinning vortex ring from ...
Life beneath the waves can be a game of cat and mouse. Seals pursue swimming fish by following the tell-tale wakes and spinning vortices they leave behind, sensing the faint swirls with their ...