Physical features:
- mouth is enclosed by 5 tentacles.
-has the biggest eye in animal kingdom; 11+ inches in diameter.
- has a cone like shape to its body
-mollusks
Systems:
-circulatory system is closed and has 3 hearts
-digests through mouth and excretes feces into the stomach.
-utilizes tentacles to eat
-excretes feces from the anus, and monomers are absorbed by the tissue
Crab
physical features:
-has swimmerets that are soft and flexible
-hard shell cover, with patterns on it
-has 4-6 front teeth next to its 2 black beady eyes
-callinectes
-changes color in very high temperature
-2 giant very powerful claws in front
-2 swimmerets
-6 sharp legs in between
Systems:
-has gills on the lateral bronchial chambers
-excretory system is located within the hard shell on its back, it is green/grey
and tastes really bitter
--males are slender and not as big
-females are round and big
-female's abdomen differs in size as they grow, a mature one is round
Crayfish:
physical features:
-2 long antennas that feel around
-eyes are sensitive to light
-usually very gritty b.c of their living environment
-small, the length of a finger
-2 eyes are located at the base of its antennas
-do not have cones but can see images
-tail is segmented and is a dark red hue
Systems:
-excretory, respiratory, digestive, circulatory and reproductive systems
are located below the carapace.
-The foregut has a set of teeth that can grind food
-excretes waste in the branchial chambers
the cephalothrax are in the respiratory system.
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