Hidden Depths — Emma Holly

James and Olivia have been happily married for many years. A harmless kink here or there spices up their love life, but they can't imagine the kinks they'll encounter while sneaking to the beach for a long, hot weekend. Anso has ruled the wereseals for one short month. He hardly needs his authority questioned because he's going crazy from mating heat. Then Anso's best friend and male lover Ty offers to help find the human mate his genes require. To Ty's amazement, Anso's quest leads him to claim not one partner but a pair. Ty would object, except he too finds the human couple hopelessly attractive . . . “The most captivating and titillating story I have read in some time . . . Flaming hot . . . even under water” -- Tara's Blog