This is not exactly doing what it says on the tin. Yes, it is a first contact narrative about a marine biologist studying a colony of octopuses in Vietnam who have developed their own culture & language of symbols, but that‘s layered with linked plot threads about human trafficking, artificial intelligence, & meditations on the human condition.
An eco-science tech thriller that brought a humanist Michael Crichton* to mind. Recommended if you ❤️🐙