Up to 50 sharks have been spotted off the coast of West Sussex in this amazing footage captured by an RSPB warden.
The sharks, identified as smooth-hounds, can grow up to 5ft in length and weight more than 13 kg.
They usually frequent offshore coastal areas but RSBP warden Peter Hughes spotted them in the Medmerry nature reserve near Sesley.
Mr Hughes said: "It was astonishing. There were just these huge fish everywhere in knee-deep water.
"We knew in time that Medmerry was going to be a great place for wildlife, but I don’t think anyone expected this.
"We assume they were coming in to feed on the crabs and other marine life that have made their home here."
It is not the first time sharks have been spotted in this area.
Last month two smooth-hounds were seen swimming around in Medmerry and six were spotted in nearby Pagham Harbour.
Smooth-hounds are a relatively common native shark species around Britain's coast and are not thought to be dangerous to humans.
They are known to feed largely on crabs and other invertebrates and often travel in groups.
Watch the footage in full below: