Cephalopods
Cephalopods are sea creatures including octopi, squid, cuttlefish, and the nautilus. They're all vertically symmetrical, have tentacles of some form, and a prominent head. They are found in all oceans at all depths, but essentially cannot tolerate freshwater environments. Cephalopods are considered the most intelligent invertebrates, and include the largest known invertebrate (the colossal squid, one of which was recently estimated to be 33 feet long). Cephalopods, with the exception of the nautilus, have color-changing skin, used for camouflage from predators. Over 1200 species of cephalopod exist
Fast Facts
- Over 1200 species of cephalopod exist
- Some cephalopods can change color to blend in
- Found only in salt water
- Considered most intelligent type of invertebrate
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