Seal the deal: amorous mammals forced to contend with cruise ships

Harbour seals struggle to match volume of passing ships when trying to attract a mate

Cruise ships are drowning out the roars of seals that are important for bagging a mate, researchers have found in the latest study to reveal the consequences of human activity on wildlife.

Ships are known to produce low-frequency sounds which can overlap with calls made by marine creatures. But now researchers studying harbour seals say such noise could be taking its toll.