Ocean's Captive

Poor little rich girl turned marine animal activist, Angeline "Angie" Malboury is in over her head when the liberation of a sea creature takes a turn for the much worse.
She ends up alone and barely clothed on a yacht with several henchmen of a ruthless and resourceful boss. Angie is quickly turned into a captive herself, along with something that isn't the young whale she thought she was saving, but a creature she thought only existed in fairy tales. A fully grown fifteen foot Merman, tail included.
There is only one goal for the two unexpected allies, escape their cruel and sadistic captors before time runs out.