"I shrimply don't need any limbs-de geso !"
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Well, that's what she says in the anime, and it's understandable: why would you need 4 limbs when you have 8 extremely long and useful tentacles.
The Shinriyaku!! Ika Musume anime is pretty basic, yet I liked it a lot: no fanservice (despite the action being held on a beach most of the time), no otaku praise (you know, like how many anime now have main characters being real otakus), no moe-ness, etc...
plus heh, how can I resist when the main character herself says that limbs are useless 
Whole pic done on one layer, all painting, so that means no lineart. It was much more easier to paint than I expected so I might try that style again. Do hope you like the dynamism of the pic and the... heroine's limblessness.