Movie 1

Hippo 1a (close up of eye and clear view of skin texture changes)

Cyclic nature of the REM sleep-like state in the cuttlefish Sepia officinalis

Teresa L. Iglesias, Jean G. Boal, Marcos G. Frank, Jochen Zeil, and Roger T. Hanlon

Journal of Experimental Biology 2019. 222:None-None; doi: 10.1242/jeb.174862