This beautiful image of a blue haired, manga style mermaid is available both as a large transparent png and a scalable vector graphic!
Here's a large, and beautiful image of a mermaid waiting on a rock while a boat floats near the shore.
Here's an image of a blonde mermaid sitting with her green tail wrapped beneath her.
This cute animated image of a mermaid riding a seahorse looks best on a dark background.
Not all mer-people can be female, so here's a nice quality image of a merman!
Old fashioned, vintage clipart of a blonde mermaid with a shimmering green tail wearing flowers.
Here's a very small and very old (think vintage internet) image of a blond mermaid.
Colorful anime mermaid animation, makes me a bit dizzy!
A beautiful image of a mermaid floating on a bubble, hair flowing in the waves.
Blue haired mermaid.
Another very old but cute cartoon (The reason why some of these graphics are so small is that they were created in the days of dial up internet... think vintage ;)).
And for something slightly different, but relevant here's an animated image of Neptune, the God of the sea sitting on his throne.