Sea Monsters (The Fin Fleming Scuba Diving Mystery Series, #8)

When a suspicious death rocks the Cayman Islands, Fin Fleming is recruited to go undercover and expose Kraken Industries—a company whose reckless construction threatens the very heart of the sea. With an octopus nursery, a shark mating ground, and endangered green turtles all in jeopardy, Fin can't turn away from the fight.
But the mission gets personal fast. Forced to team up with her ex, Liam, and his environmental remediation crew, Fin faces sabotage, harassment, and danger at every turn....