23 February 2013 Last updated at 13:19 ET

Vale of Glamorgan: Sully, Dunraven Bay tide rescues

Sully Island is just off the coast and can be reached on foot only via a tidal causeway

Three people have been rescued and taken to hospital after being trapped by the incoming tide in two separate incidents in the Vale of Glamorgan in one afternoon.

Five people were cut off on Sully Island and four got back to the mainland through water on the causeway.

A fifth was left on the island and rescued by Penarth lifeboat at 14:40 GMT on Saturday.

In the second incident two people were stuck on rocks at Dunraven Bay.

After the Sully rescue one person was taken to the University of Wales Hospital in Cardiff by ambulance suffering from the symptoms of mild hypothermia.

A Swansea Coastguard spokesman said the causeway to the island was cut off by each high tide, and there are signs at the site warning of the dangers.

About 20 miles (32km) further west at Dunraven Bay the two people had again been cut off by the tide and were taken off by Llantwit Major Coastguard.

They were airlifted to the same hospital by an RAF helicopter based at Chivenor in north Devon. Porthcawl inshore lifeboat was also in attendance.