Sea Hearts by Margo Lanagan

'Why would I? People are uneasy enough with me - if I start bringing up sea-wives, they'll take against me good and proper.'
'It could be secret.' 
'Could it?'

I'm just completing the first draft of a novel called The Brides of Rollrock Island, which is about selkies - that is, seals that come up out of the sea and transform into humans, and live among people. It's a very sad, strange story; a lot of people in it make themselves wretched with magic. But of course it's beautiful and atmospheric too - the selkies themselves are beautiful, but so is the landscape, the seascape, the weather, and some of the humans. This novel is also less violent than Tender Morsels, so a lot more readers will find it easier to stomach, I hope. I believe it'll come out as YA here in Australia and in the US, but as a crossover, in adult and YA editions, in the UK, as Tender Morsels did. ( Margo Lanagan)

On remote Rollrock Island, the sea-witch Misskaella discovers she can draw a girl from the heart of a seal. So, for a price, any man might buy himself a bride; an irresistibly enchanting sea-wife. But what cost will be borne by the people of Rollrock - the men, the women, the children - once Misskaella sets her heart on doing such a thing? Margo Lanagan weaves an extraordinary tale of desire and revenge, of loyalty, heartache and human weakness, and of the unforeseen consequences of all-consuming love