Phylum Cnidaria

Class Hydrozoa

polyp-dom, orders Leptomedusae, Anthomedusae, Siphonophora

Order Anthomedusae

Hydra, Valella, Porpita

Planula larva

cell ball with cilia, settles to make polyp colony

Valella

chitanous pneum, dactyls/gonos/large gastro, sail to catch wind

Porpita “blue button”

chitanous disk, dactyls/gonos/large gastro

Physalia “man o’ war”

7 cormidia, prisoner medusae

Cormidia

polyp groups that hang down from pneum

Class Scyphozoa

medusa-dom, orders Semeostomeae, Rhizostomeae

Scyphistoma stage

polyp that has ability to bud off medusae

Strobila stage

when medusae are budding off of polyp

Ephyra

immature medusa that buds off strobila stage

Aurelia “moon jelly'“

large bell, long oral arms, small marginal tentacles, 4-chambered gut

Chrysaora “sea nettle”

long oral arms, large marginal tentacles

Stomolophus meleagris “cannonball jelly”

oral arms fused into mass on bottom of bell

Class Cubozoa

medusa-dom, medusa buds off of polyp

Chironex “sea wasp”

serious stings

Carukia

irukanji syndrome- neurotoxin that disrupts nervous system to cause pain. stinging cells in bell and tentacles

Tamoya

common box jelly in gulf