Garth Dominy, NSRI Wilderness station commander, said:
At 12h51, Tuesday, 30 March, NSRI Wilderness duty crew were activated following eye-witness reports of a drowning in progress at Gwaing River Mouth.
NSRI rescue swimmers responded to the scene in our NSRI rescue vehicle and NSRI crew responded to Herolds Bay where the sea rescue craft Oscars Rescue was launched.
WC Government Health EMS rescue squad, George Fire and Rescue Services and the SA Police Services responded.
On arrival on the scene a sea and shoreline search commenced for a local male teenager, believed to be aged 15 or 16, who was last seen appearing to be in difficulty in the surf while swimming with friends before he disappeared in the water.
Despite an extensive search there remains no sign of the teenager.
A Police Dive Unit are tasked to continue in an ongoing search operation.
Thoughts are with the family and friends of the missing teenager in this difficult time.