nice pics sam and tail looks good as well those extra fins are interesting and the color looks good on her.
back in the 60's my parents took us to Florida here in the USA and we saw mermaids swiming. there was a big clear spring and they put a sunken room with a big window to watch merdaids swim around the place was called weeki wachee. some of the mermaids even drank soda under water.
https://weekiwachee.com/mermaids/
carlys_guy