By: Mustafa Alsaegh, Sable Dalton, & Jamie Lewman

BY: MUSTAFA ALSAEGH, SABLE DALTON, & JAMIE LEWMAN

https://s-media-cache- ak0.pinimg.com/236x/5d/5f/d4/5d5fd4fb3d 52150d304ff08fb90d94b3.jpg LEVEL OF CLASSIFICATIONS • Domain: Eukarya • Kingdom: Animalia • Phylum: Echinodermata • Subphylum: Blastozoa • Class: Eocrinoidea, Parablastoidea, Rhombifera, Diploporita, & Blastoidea • Subphylum: Crinozoa • Class: Crinoidea & Paracrinoidea • Subphylum: Echinozoa • Class: Echinoidea, Holithuriudea, Edrioasteroidea, Edrioblastoidea, Helicophacoidea, & Cyclocystoidea • Subphylum: Asterozoa • Class: Asteroidea & Ophiuroidea • Subphylum: Homalozoa • Class: Stylophora, Homoiostelea, Homostelea, &Ctenocystoidea ORGANISMS

Asteroidea: The Starfish Echinoidea: The Sea Urchin Holothuroidea: The Sea Cucumber https://encrypted- http://farm1.staticflickr.com/206/496812354 tbn3.gstatic.com/images? _4275a173db.jpg q=tbn:ANd9GcR4- https://encrypted-tbn2.gstatic.com/images? SxOxmNRNNu4NWdBMqKQ9mhDIoqP9_sZ q=tbn:ANd9GcR1BzRlTZfOpjiM36xW- s91N0_grU_Z0m3aG slqtaOhCZHxPr-mI7ewICLE4cJLRTA2ZA ORGANISMS CONTINUED…

Crinoidea: The Sea-lilies Crinoidea: The Feather Star Ophiuoidea: The Brittle Star

http://img.theepochtimes.com/n3/eet- http://173.255.218.6:8888/unsafe/810x540/im https://upload.wikimedia.org/wikipedia/en/ content/uploads/2015/05/06/Proisocrinus_r ages.whatsthatfish.com/original/HNhVDJaBP9.j 6/64/Greenbrittlestar.jpg uberrimus.jpg pg UNIFYING CHARACTERISTICS

Possess 5-rayed symmetry, mostly radial, sometimes bilateral Body has more than two cell layers, tissues and organs Body cavity is a true coelom Most possesses a through gut with an anus Body shape highly variable, but with no head Nervous system includes a circum-oesophageal ring Poorly defined open circulatory system Has a water vascular system, which hydraulically operates the tube feet or feeding tentacles Without excretory organs Reproduction normally sexual and gonochoristic Feeds on fine particles in the water, detritus or other animals All live in marine environments HABITAT CHARACTERISTICS

• Live in Marine habitat • Only found in the Ocean • Mostly on the seafloor

http://nervousphylums.weebly.com/uploads/2/0/0 /6/20064013/1368767435.jpg

http://i.ytimg.com/vi/SQeuxGiMRcM/0.jpg FEEDING & DIGESTION • They use their feet • The eat mollusks, worms, and slow-moving animals • The enzymes help them digest food

http://cdn.makeagif.com/media/1-19-2015/hPJwE6.gifhttp://1.bp.blogspot.com/-6bW-dBWh_jA.gif Sea Stars have a unique digestive system with a mouth at the center of their underside and an anus on their upper surface. Food can be brought into the stomach through the mouth to digest food outside the body.

http://digestivemack.weebly.com/uploads/1/1/5/1/115 17135/747003_orig.jpg FOOD DIGESTION OF SEA STARS

https://www.youtube.com/watch?v=HG17TsgV_qI