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Entamoeba histolytica - A parasitic amoebozoa that feeds on other organisms and can not make its own food. - Infects about 50 million people worldwide - Shell made of calcium carbonate - Unicellular Chondrocladia lyra - Found in the deep sea, attached to the bottom - Has Velcro-like barbed hooks that cover its limbs and catch prey as it is carried by on the current - Also feeds by pushing water through its ostia - Is multicellular, but does not have tissues, organs, or organ systems Leucaltis clathria - Small group of coalescing tubes that filter feed in the water - Is sessile and attaches to either the sandy bottom or rocks. - Has a skeleton of spicules - Found in the Caribbean Sea Stichodactyla haddoni - Is a multicellular carnivore - Uses nematocysts to stun and capture their food - While closed up, they exhibit radial symmetry - They can not swim and are sessile in their adult lives Cassiopea xamachana - Is a multicellular carnivore - Uses nematocysts to stun and capture their food - While closed up, they exhibit radial symmetry - They swim, but like to remain upside down on the bottom of the ocean floor Mnemiopsis leidyi - Is a multicellular carnivore - Uses cilia to move in the water and create a reflective rainbow light - Does not have stinging tentacles Prostheceraeus giesbrechtii (roseus) - Is a multicellular carnivore - Has two mobile tentacles - Is found in the Mediterranean Sea - Has bilateral symmetry, a central nervous system, and tissues organized into organs Tevnia jerichonana - Is a multicellular carnivore and uses its parapodia for movement and catching prey - Is found in the deep ocean - Has bilateral symmetry, a central nervous system, and tissues organized into organs - Has a segmented body structure Sinistrofulgur perversum - Is a multicellular carnivore - Has a calcium carbonate shell and a muscular foot - Eats using a radula or scraping tongue - Creates its own shell that grows with it over time Aplysia fasciata - Is a multicellular carnivore - Has large wing-like flaps that protect the gills and are used for swimming - Produce purple ink as a defense - All hermaphroditic; each animal is both male and female. - Has a soft internal shell made of protein Scyllarides nodifer - Is a multicellular carnivore - Has 14 segments and a thick carapace (shell) - Is a bottom dwelling animal that eats limpets, mussels, and oysters - Has jointed maxillipeds used for walking Semibalanus balanoides - Is a multicellular carnivore - Has a cone-shaped shell-wall made of calcium - Has jointed appendages that wave and catch their food as it passes on the current - Is sessile as an adult Eucidaris tribuloides - Looks identical to a developing human for the first four days after fertilization. - Has large, wide spines that it uses for locomotion - Has a mouth with five teeth on its underside, giving it pentamerous radial symmetry. Pseudocolochirus axilogus - Brightly colored, toxic multicellular predator. - Filter feeders that use their tentacles to feed on prey - Has internal radial symmetry and can be divided dorsoventrally into five equal parts - Can be found in the Pacific Ocean along Australia Aplidium stellatum - Is a colonial, multicellular organism - Has a cartilage-like exoskeleton composed of cellulose and a notochord. - Has specialized blood cells that concentrate heavy metals - The heavy metals in its blood act as antibiotics and keep it healthy