This is my mint sim - Lilla Waterman.  Her maiden name was O'Keefe.  I went so far as to make her parents, download a mermaid off the gallery to marry, and make her husband (the mermaid) parents as well.  Her husband is a goth mermaid by the user VampireLady. 

I've decided to try to take a picture of the current generation as a young adult (or adult) once their parent has entered the elder life stage.  This is my rose sim - Ezra Waterman.

As you can tell, I am trying to get the same pose for each picture.  This is the yellow generation - Winston Waterman.  She is an asexual, transgender mad scientist.  She is a plain sim who decided to adopt her son as she just can't fathom woohooing with anyone.  She is now on a mission to become immortal.

This is Javier Waterman, adopted by his mom, the mad scientist.  He's athletic and obsesses over anything sporty.  His Mom became a werewolf, so he's pretty used to the aggression as well.  He married a emo goth boy named Jonathan, who by only a Sim miracle could have his biological children.  Before he got married he had many children who he raised, along with the heir of his family - Bora for the plum generation.

Bora Waterman (married to be Baughman) is a doctor and she hates it.  She spends all her time dancing & playing piano.  She married her college sweetheart twice and had a beautiful daughter named Yaretzi.  Once her daughter became a teen, she retired her doctor shingle and became an entertainer.  Once her daughter moved out her & her husband became mermaids so they would have a legitimate reason to go to the beach all the time.

Yaretzi Baughman is a Sim who believes she's evil and loves it.  No one believes her, but they let her think it as it makes her so happy.  It doesn't help she's a criminal and hardly brings in money.  She married an alien who gave her  twins, which she adores.  Her daughters hardly take after her, but she is ok with that as they take after their other mother who she loves with all her heart.  Why wouldn't she want her kids to be like the one she loves and be safe?  She is evil, but not that evil.  She died as an adult due to her criminal practices.

Miriam Tanaka took after her mother - Mia.  Yaretzi loved her and her twin so very much.  Miriam grew up to have a fabulous garden and had a flower arranging business on the side.  She was a world renowned author and has a star in Del Sol Valley next to her Grandpa Ezra (2nd Generation).  She married, got divorced, and and after her death she remarried her husband and father to her children.  They had 2 children.

Persik Tanaka decided at a young age he was into men far more then women.  He loved the soft & romantic things in life.  He married a man named Wade & had a set of beautiful twins named Jade & Bancha.  His husband & him decided to share a boyfriend who they now live with in their ghost forms in their apartment in San Myshuno.

After Jade & Bancha became official adults they decided to go out on their own & have families.  Bancha mated with a werewolf, while Jade found a line of Watermans that no one knew of.  They where an offshoot from her grandpa Ezra (2nd generation).  She had no qualms about going to try to get back into the Waterman line officially as the 4th generation of her line was adopted - so no biological connection!  And was she glad she ever went to look for them - she found the love of her life, Rowan.  On their wedding day Rowan gave her a kelp so she could be a mermaid with him and any children they had.

Nix is the oldest child of Jade & Rowan.  She is also the start of my play through of mermaids I've called The Waterman Clan. Nix was really good friends with her parents, brother & sister in law.  She moved to Sulani and built a house for all future Waterman mermaids.