scientificillustration:

Fig. A. Squid throwing out a defensive smoke screen of sepia ink
Fig. B. Deep sea prawn emitting a luminescent defensive cloud by BioDivLibrary on Flickr.
The Arcturus adventureNew York :Putnam,1926..biodiversitylibrary.org/page/4686784

scientificillustration:

Fig. A. Squid throwing out a defensive smoke screen of sepia ink

Fig. B. Deep sea prawn emitting a luminescent defensive cloud by BioDivLibrary on Flickr.

The Arcturus adventure
New York :Putnam,1926..
biodiversitylibrary.org/page/4686784