Argonaut Octopus

Logo concept for Argonaut, an accessory for sunglasses that helps them stay afloat in water. An Argonaut Octopus is a type of Octopus that creates a thin, nautilus shaped, rib textured sac that it can pull itself into head first to attain a level of buoyancy in water and yet remain mobile.

** Check out the cool animation of this concept in the attachment animated by Twitter member @acilopp