Police and the HM Coastguard have been called to the area of Culver Down between Sandown and Bembridge.
Solent Coastguard has also been called to the incident.
Coastguard told Isle of Wight Radio it was alerted at 10.28am and will be deploying “multiple assets”.
*Isle of Wight Radio has been told it is a police led incident and involves a ‘missing person’. Extensive searches are being carried out.