Phylum: Cnidaria & Ctenophora

-(both)Radilly symmetrical,diploblastic(Radiata)

-(both)True tissues(Eumetazoa)

Phylum:Cnidaria

-Body consists of 2 body tissue layers w/ Jelly like

material in between

-Most have radial symmetry

-2 body forms:sessile polyp & free floating medusa

-Tentacles w/ stinging cnidocytes

-Some species are colonial

-Most live in alternating water environments

Class:Anthozoa

-"Flower Plants"

-Largest class

-Only occur in polyp form

-6,000 species

Class:Scyphozoa

-Medusa stage

-ex:)jellyfish

Class:Hydrozoa

-Polyp stage

-ex:)man of war

Phylum:Ctepophora

-"Comb Bearers"

-Resemble Cnidarian medusa

-Only 100 species

-Mostly marine habitat

-Largest animal to use cilia for locomotion

-ex:)comb jellies