The Tropical Fish Aren't too Keen With a Dead Body Floating in their Aquarium Tank

Quinn is not your ordinary witch. She uses and manipulates water, communicates with marine animals and can breathe underwater for long periods. When she returns to her hometown of King's Tide, to take over operations at the local aquarium, she doesn't expect murder to be the order of business. The victim was a donor to the aquarium and he's pulling his donations. That makes Quinn suspect number one.
Apollo is a member of the Coast Guard and a shapeshifting eagle. He and Quinn were high school friends, but their stars never aligned. Perhaps there's a chance now that both are older, or has life jaded them into thinking they are destined to be loners?
Robin, Quinn's friend and resident fairy, is a surfer dude who entertains along the Coney Island like setting near the pier. And Nora, a Selkie, loves to explore old ship wrecks. Could this get her into trouble?
Ridley is Quinn's turtle familiar. What he lacks in speed he makes up for with snark.