West Bali, about 10 meters deep. Body is roughly 10 cm across. Does not move.


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    $\begingroup$ Is that "does not move " in the timeframe you allowed? Or based on a timeframe of months of continuous observation. $\endgroup$ – Solar Mike Dec 16 '18 at 6:55
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    $\begingroup$ Lack of movement suggests it's not a sea slug. Possibly a strange tunicate? $\endgroup$ – theforestecologist Jun 30 '19 at 18:49

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