Nature wardens say they were "astonished" to come across a group of up to 50 sharks swimming in rising tidal waters in West Sussex.
Video footage shows dozens of fins circling in the knee-deep water at RSPB's MedmerryÂ wildlife site near Selsey.
The society says it was an "unprecedented" group & identified them as smooth-hounds, a type of shark usually found offshore in coastal waters.
RSPB warden Peter Hughes captured the footage.
He said: "It was astonishing. There were just these huge fish everywhere in knee-deep water.
"We assume they were coming in to feed on the crabs & other marine life that have made their home at Medmerry.
"We knew in time that (this)Â was going to be a tremendous place for wildlife, yet I donâ€™t think anyone expected this!"
A smooth-hound can grow up to 159 cm (5 ft 3 ins) long & weigh more than 13 kg (29 lb).
They are a shallow water shark species & regularly come close enough to land to be targeted by the shore angler.
Source: “Sky News”