The family of a diver who has been missing since Tuesday after failing to surface off Old Harry Rocks say they are heartbroken at her loss.
She has been named as Emily Sherwin, 20, from Poole.
Dorset Police officers supported HM Coastguard and the RNLI as extensive searches were carried out throughout the evening of Tuesday and during Wednesday.
A police dive team from Avon and Somerset Police also attended to conduct searches in the area where Emily was last seen.
In a statement, Emily’s family said: “We are heartbroken at the loss of Emily, but eternally grateful for the 20 wonderful years we had with her, and finding comfort in the fact that she was doing something she loved.
“Emily was unique: high spirited, outgoing, loving and loyal. She lit up every room. Emily adored the sea and loved sailing and diving. She was looking forward to an exciting career in marine conservation.
“We would like to thank all involved in the attempts to find Emily: the RNLI and coastguard teams, the police divers and all at Parkstone Yacht Club who took over 30 boats to join the search. The search operation was a testimony to the impact she had upon everyone she met and the love we all share for her.
“We will miss her forever.”
Detective Chief Inspector Rachel Vallins, of Dorset Police, said: “Officers are continuing to keep the family fully updated and our thoughts are with all of Emily’s loved ones at this extremely difficult time.
“With our partner agencies we have carried out extensive searches in the area where Emily had dived over recent days, but unfortunately we have been unable to locate her at this time.
“Following liaison with maritime experts and a thorough examination of the conditions and circumstances surrounding this incident, we have now taken the decision to stand down our underwater searches. Officers have spoken with Emily’s family to inform them of this latest development.
“While the dive search activity has now ceased, we will continue to carry out enquiries and remain committed to exploring every available line of enquiry to locate Emily.
“Finally, I would like to thank all those from partner agencies, as well as volunteers from the community and our own officers, who have worked tirelessly in the search efforts.”