Saved By the Sea Lord by Starla Night

She made a terrible mistake. One that could end an entire race.

As the program assistant at MerMatch{.}com, Hazel should be helping her boss find the gorgeous, tattooed, desperately endangered mer warriors their human soul mates. But after another long rant about how easy it should be to stop their stupid undersea war, she’s suddenly in charge of a lot more than filing.
Which is a bit, um, exciting. Her projects tend to fall down around her ears, and if this one collapses, a lot of mermen could die.
Then the warrior in charge of carrying out her grand plan surfaces.
This deadly shark-whispering shifter is off-the-charts hot. But he needs a clever, diplomatic human partner to complete his mission.
There’s only one problem.
It looks like Hazel is his soul mate.