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Class: Cephalopoda (Head Foot)
Class: Cephalopoda (Head Foot)
The cephalodods are amazing animals. They have developed traits very different than all other animals.
-They have chromatophores for changing color.
-Octopuses are the most intelligent invertebrate on the planet.
-Octopuses developed intelligence unequal different than all other phyla of animals.
-Cephalopods have complicated eyes with good vision
-They are the only molluscs with a closed circulatory system (they have veins)
-They have 3 hearts. One for each of their 2 gills and a central heart as well.
Order: Sepiida
Common Name: Cuttlefish (Cephalopod)
Cuttlefish are masters of camouflage just like their cousins the octopuses.
Cuttlefish might look like squid but they are not squid. Here are some differences.
-Cuttlefish have a cuttlebone in the middle of their body they helps them with buoyancy and squid do not.
-Because of the cuttlebone, cuttlefish mostly hover while squid are sleek and fast swimmers.
-Cuttlefish have wavy or W shaped pupils while squid have round pupils.
Watch and enjoy this Deep Look video about the Cuttlefish. Create a box in your sketchbook, title it "Cuttlefish" and write down interesting things that you learn from the video and include an image in your sketchbook.
Watch and enjoy this Animalogic video about the Cuttlefish.
Order: Octopoda
Order: Octopoda
Common Name: Octopus (Cephalopod)
The octopus is the most intelegent invertrabrate.
They are also the best at camouflage out of all the cephalopods.
-Their skin has chromatophores that change colors
Watch this Animalogic video about octopuses. Create a box in your sketchbook, title it "Octopuses" and write down interesting things that you learn from the video and include an image in your sketchbook. There is a lot of information here about octopuses. Write down a lot of good information about octopuses in your sketchbook.
Kate Terbush
Kate Terbush
Blue Ringed Octopus drawn by Stephanie Ko
Watch and enjoy this short Johnathan Bird video about the blue ringed octopus. Create a box in your sketchbook, title it "Blue Ringed Octopus" and write down interesting things that you learn from the video and include an image in your sketchbook.
Octopuses and Squids use a siphon as a jet to propel their bodies through the water
Octopuses have 9 brains. They have a brain at the end of each arms and then a central brain.
They have 3 hearts
and many of them are venomous.
Watch and enjoy this Deep Look video on Octopus smell. write down interesting things that you learn in your sketchbook.
Watch this two or three times. You will be amazed at the octopuses ability to blend in.
Watch this Jonathon Bird video on the mimic octopus
This is an optional video on the mimic octopus. Not the best video but it gives you an idea of an incredible species of octopus.
Watch and enjoy this SciShow video on Octopuses. write down interesting things that you learn in your sketchbook.
Watch and enjoy this SciShow video on Blanket Octopuses. write down interesting things that you learn in your sketchbook.
Order: Teuthida
Order: Teuthida
Common Name: Squid (Cephalopod)
Squid and octopuses have many of the same features, however, squid are not as intelligent and usually not as good at color changing as the octopuses.
Squid are fast strong swimmers and sometimes live out in open ocean. They are fast hunters.
The strangest squid live in the deep ocean. examples like the dumbo squid and the vampire squid.
There are also giant and colossal squid which can grow to massive sizes. Some weighing over 1,000lbs with a length of 40 feet. We do not see giant squid often since they are deep sea dwellers. Sometimes sperm whales dive and bring them up to the surface for us to catch a glimpse. This is where the stories of sea monsters and kraken come from.
Order: Nautilida
Order: Nautilida
Common Name:Nautilus (Cephalopod)
The nautilus is a very interesting animal. I want you to research the nautilus and include a short paragraph describing the things you learn about the nautilus. 3-5 sentences.
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