I love these original watercolors that I found in a local antique shop! Unfortunately, as I am relying exclusively on my iPhone photography, the vividness of the color and detail is not fully conveyed.
I found these to be really unique and fun while still maintaining a nice composition. These are probably late 19th century from France.
Please excuse the iPhone photo!
Here are photos of French turtle watercolors (same artist and dimensions as the shells above) also 19th century