"Far from being slow learning, manatees, it turns out, are as adept at experimental tasks as dolphins, though they are slower-moving and, having no taste for fish, more difficult to motivate."
Well, you certainly won't find as much artwork on manatees as you would elk or tigers but there are some. So here some images I found of artwork of manatees, my first subject in my "Uncommon Wildlife Subjects" blog series. Enjoy.
I tried to find a painting of a dugong could only come up with a couple of illustrations, not what would be considered fine art. If you know of a painting of dugong let me know and I'll add it here. To help you identify them here's a chart of the various specious of the order Sirenia from Sirenian International. The most obvious difference is the tail, the dugong having one shaped more like a dolphin or whale while the manatee has a round paddle-like tail similar to a beaver. (Click the image for a larger view)