S. L. Huang’s 2017 The Little Homo Sapiens Scientist is a standalone SF retelling of Hans Christian Andersen’s The Little Mermaid.
Dr. Cadence Mbella specializes in piscianthropology, the study of atargati culture and society. Not much is known about the atargati, the so-called mermaids, except that they live in the abyssal depths of the world’s ocean and they are as intelligent as humans.
As Mbella warns anyone reading her ongoing account, it is a mistake to allow the arbitrary terms that humans apply to the abyssals to shape human perceptions. The atargati are quite unlike humans or their myths. Exactly how unlike, Mbella is going to learn first-hand.