Head of sustainability at Guernsey Ports, Lisa Duggan, said: “Puffins and other seabirds are very easily disturbed when they are rafting – so it is really important to keep a distance and slow down.”
Puffins return each year to the cliffs of Herm, an internationally recognised Ramsar site, to raise their offspring.
Puffins mate for life and return to the same burrow to lay one single egg.
Once the egg has hatched, the parents leave the chick in the burrow whilst they forage at sea, primarily for sand eels.
Both adult puffins and newly fledged puffling chicks gather in groups on the water, known as rafts, to rest and socialise between feeding trips.