![Figure][1] Henry the seal preparing to test the sensitivity of his whiskers to jets of water. Photo credit: Marine Science Center Rostock. Plunging through gentle swell in the northern oceans… Click to show full abstract
![Figure][1] Henry the seal preparing to test the sensitivity of his whiskers to jets of water. Photo credit: Marine Science Center Rostock. Plunging through gentle swell in the northern oceans in search of food, harbour seals are guided by a cryptic superpower that few fish can evade. ‘
               
Click one of the above tabs to view related content.