Day 16 Decapoda: Crabs
Decapoda: Crabs
Crabs have some of the most complicated gestures for an invertebrate
-Crabs use a large variety of hand signals and often communicate using signals
-Crabs argue and settle disputes using leg gestures
-They also have matting dances
-crabs also have some neat use of tools
The Pom Pom Crab or Boxer Crab
The pom pom/boxer crab attaches sea anemones to its claws and uses them to sting any attackers.
Watch and enjoy this Deep Look video about the Blackback land crab. Create a box in your sketchbook, title it "Blackback Land Crab" and write down interesting things that you learn from the video and include an image in your sketchbook.
Christmas Islands Red Crab Migration
Every year on the Christmas Island the Red Crabs march across the island from one side to the other to mate and lay their eggs.
Interesting but optional videos of the red crab migration.
The worlds largest land Arthropod
The Coconut Crab
Watch this short video of a robber crab/coconut crab just to get an idea of their size.
This is an optional video talking about the coconut crab. If you are interested in learning more about the coconut crag, enjoy this video.
Hermit Crab
Not a crab! They are a Decapod but they are in their own infraorder
Enjoy this Johnathan Bird video about a hermit crab changing its shell.
Watch and enjoy this Deep Look video about the decorator crab. Create a box in your sketchbook, title it "Decorator Crab" and write down interesting things that you learn from the video and include an image in your sketchbook.
Watch and enjoy this Deep Look video about the mole crab. Create a box in your sketchbook, title it "Mole Crab" and write down interesting things that you learn from the video and include an image in your sketchbook.
Other Marine Arthropods (These are not Crustaceans)
Class Merostomata
The Horseshoe Crabs
There are also many extinct marine arthropods
-One being the Sea scorpion
This is a very outdated documentary on the mantis shrimp. If you are interested feel free to watch. There are some really cool shots of them breaking glass and breaking off the claws of lobsters.