Photographed off the Western coast of India, Goa, to be precise. Not even sure this is a creature since I've never seen anything like it. It appeared to move by shooting tiny jets of water from its tentacle like thingies. It looks a bit like a jellyfish but without the typical shape expected.
Update: No larger animals around, but there were people fishing. Just off the water's edge. Also, no, I don't actually frequent the place so I can't be sure it's not part of the native fauna. Size: Perhaps two adult hand spans long.