Mermaids are mythical creatures, and while they don't really exist, are depicted as being humanoid from the waist up, but having a fish-like tail below the waist instead of legs. In that sense they would be semi-humanoid.
wet
Yes, the three types of humanoid aliens are humanoid, non-humanoid and semi-humanoid.
mermaid
As a mermaid is a mythological aquatic creature with a female human head, arms, and torso and the tail of a fish, then yes they do.
Stakker Humanoid was created in 1988.
Jed the Humanoid was created in 2000.
"Homo erectus" is the latin name for humanoid.
Tonight - Humanoid song - was created in 1989.
Global - Humanoid album - was created in 1989.
Yes and No. Mermaids are mythical creatures, but Melissa is real-- a human entertainer who portrays a mermaid in her act. She is an experienced free diver, who owns her own business, in which she travels around the country and performs aquatic tricks and dives, dressed as a mermaid. I enclose a link to her website so that you can get more information about how her act developed and what she does during a typical performance.
Ursula. In the original story she is humanoid and is just called the Sea Witch and is not really a ( bad) character, something like the Nurse Maid in Romeo and Juliet- but she doesn"t peddle knockout drops.
Monkeys are considered to be ancestors of their humanoid counter parts.