The Merperson: Medium Skin Tone emoji is a modifier sequence combining ? Merperson and ? Medium Skin Tone. These display as a single emoji on supported platforms.
Merperson: Medium Skin Tone was added to Emoji 5.0 in 2017.
U+1F9DC
U+1F3FD
?? Merperson
?? Emoji modifier fitzpatrick type-4