The pairs of cirri start between the third and fourth sucker, and at greatest length the cirri are roughly equal to the sucker diameter.

The internal shell (fin support) is roughly U-shaped, its ends flattened with small spikes.

The mantle and head are gray, posterior edges of the fins are reddish brown the inside of the arm webbing (oral surface) is dark purple to reddish brown.

[3][4] The diet and behavior of G. bathynectes has not been recorded, but is presumably similar to others in its genus.

G. bathynectes has only been collected from Tufts Abyssal Plain and Cascadia Abyssal Plain of the northeastern Pacific Ocean, from depths of 2816 to 3932 m.[4]