Mermaid Ambre Saint-Clare is a mermaid performer of unusual beauty, dexterity and poise located in London, England. In addition to her deep dives, she seems to be a master of fire as well (curiously a specialty of a number of mermaid performers).

Photographer Brenda Stumpf has captured a number of beautiful (and in some cases terrifying) sirens on her website. (http://www.bstumpf.com). They highlight not only the beautiful and mystical allure of sirens, but also their more sinister and horrific side in a photo essay that shouldn't be missed.

I have very little direct info on it, but the manga Ludwig Gensoukyoku appears to have a storyline inspired somewhat by the Little Mermaid story. The setting (from the pages I've seen) suggests pirates may be involved too.

I also found samples of the manga under the title of "Ludwig Fantasia".

Barry Blair was the founder of Aircell comics, an alternate imprint founded in the early 1980s that published a number including Samurai, Elflord, Dragonforce and Men in Black (which was the inspiration for the highly successful films of the same name featuring Will Smith and Tommie Lee Jones). Later in his career he illustrated a run of Wendy and Richard Pini's Elfquest, and also began regularly doing a series of one off erotic comic pages, including several mermaids. He died in 2010 due to a brain aneurism.