Trivia: The Mermaid spit "ink" at Dr. Beyer in his car. This suggests a Mermaid is similar to an octopus, squid, or cuttlefish (which have "ink sacs" - though anal, not oral!) and is a type of mollusk, not fish. However, mollusks are invertebrates, and the Mermaid in the movie apparently had a spine/backbone. (01:13:28)
Mermaid Down (2019)
2 trivia entries
Directed by: Jeffrey Grellman
Starring: Alexandra Bokova, Meggan Kaiser, Phillip Andre Botello
Continuity mistake: There wasn't much blood noticeable on the axe after it was used to chop off the mermaid's tail, but a little later when the man was carrying it over his shoulder, it was heavily covered in blood and dripping. (00:14:17)
Ship Captain: Why the mermaid has hair could be perhaps indeed for the same reason why the walrus has a mustache. Why does a walrus have a mustache? I don't know the answer to this, but it does indeed. Sure as a jury in a witch trial, they do.