Hi! Several divers saw this almost round transparent sack floating 1 m above a reef at Weather Islands (väderöarna) north of Gothenburg Sweden 11 july 2018. Depth 8 m. 14 deg in water. The dots seemed to be on the surface and there is a grey area in the middle. Noone saw any attachment. Diameter...
Evidence for a cordal, not ganglionic, pattern of cephalopod brain neurogenesis
Shuichi Shigeno, Rahul Parnaik, Caroline B. Albertin, Clifton W. Ragsdale 2015 (full paper)
Contains several excellent image collages of developing bimacs (DWhatley)