Friday Squid Blogging: Bioluminescence as Camouflage
There is one feature of the squid that is not transparent and which could act as a signal to prey the eyes. However, the squid has a developed protection here as well. The large eyes of the squid are camouflaged with bioluminescence.
Underneath the eyes of the squid are silvery patches of cells called photophores. These provide under surface bioluminescence which adds to the camouflage. The cells leak put light in multiple directions that effectively make the squid invisible when viewed from above. The resultant glowing blur makes the eyes of the glass squid less conspicuous to predator approaching from a variety of angles.
As usual, you can also use this squid post to talk about the security stories in the news that I haven’t covered.