Colorful Cuttlefish and their Creative Camouflage - No Bones

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Colorful Cuttlefish and their Creative Camouflage - No Bones
May 2015

Article includes videos and photos.

This post is the third of a 4-part series by students of a Biological Oceanography course at Pennsylvania State University taught by Dr. Mónica Medina.

Despite their common name, cuttlefish are not fish or even vertebrates. They are mollusks and more specifically cephalopods, being closely related to squids and octopus. They derive their name from the cuttlebone, which is a hard, internal shell primarily composed of aragonite and utilized for buoyancy control. Belonging to the order Sepiida, cuttlefish possess the general cephalopod body plan with the head and mantle forming a single unit from which eight arms and two sucker-covered tentacles are attached. ...
 
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