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horseshoe crab

Phylum: Arthropoda
Subphylum: Chelicerata
Class: Merostomata

sea spider

Phylum: Arthropoda
Subphylum: Chelicerata
Class: Pycnogonida

jellyfish

Phylum: Cnidaria
Class: Scyphozoa

comb jelly

Phylum: Ctenophora

snail

Phylum: Mollusca
Class: Gastropoda

clam

Phylum: Mollusca
Class: Pelecypoda

scallop

Phylum: Mollusca
Class: Bivalvia (Pelecypoda maybe?)

oyster

Phylum: Mollusca
Class: Pelecypoda

squid

Phylum: Mollusca
Class: Cephalopoda

octopus

Phylum: Mollusca
Class: Cephalopoda

chiton

Phylum: Mollusca
Class: Polyplacophora

flatworm

Phylum: Platyhelminthes

roundworm

Phylum: Nematoda

segmented worm (ringed worm)

Phylum: Annelida

lobster

Phylum: Arthropoda
Subphylum: Crustacea
Class: Malacostraca

crab

Phylum: Arthropoda
Subphylum: Crustacea
Class: Malacostraca

shrimp

Phylum: Arthropoda
Subphylum: Crustacea
Class: Malacostraca

sea urchin

Phylum: Echinodermata
Class: Echinoidea

sand dollar

Phylum: Echinodermata
Class: Echinoidea

starfish (sea star)

Phylum: Echinodermata
Class: Asteroidea

basket star

Phylum: Echinodermata
Class: Ophiuroidea

sea cucumber

Phylum: Echinodermata
Class: Holothuroidea

glass sponge

Phylum: Porifera
Class: Hexactinellida

clonal anemone (aggregating anemone)

Phylum: Cnidaria
Class: Anthozoa

box jellyfish

Phylum: Cnidaria
Class: Cubozoa

man-of-war

Phylum: Cnidaria
Class: Hydrozoa

hydrozoa class = hydroid

sea squirt (tunicate)

Phylum: Chordata
Subphylum: Urochordata

moss animals

Phylum: Bryozoa

porifera

sponges

no nerves or muscles
No true tissues
No organs
No definite symmetry
filter feeders
hermaphrodites
capable of regeneration

cnidaria

jellies, corals, anemones

Radial symmetry
gastrovascular cavity
have circle of tentacles around mouth
has 2 body plans, the medusa and the polyp
have nematocysts or cnidocytes (stinging cells)
can be either sessile or motile (see classes) depending on stage in life cycle
nerve net
muscular system
hydrostatic skeleton
2 tissue layers: Epidermis and Gastrodermis with Mesoglea in between

platyhelmenthes/nematoda/annelida

"worms"

bryozoa

"moss animals"

Otherwise known as moss animals or sea mats
colony forming animals
Lophophores -- ciliated tentacles around mouth
Sessile

mollusca

squid, octopi, clams, snails, slugs

arthropoda/arthropods

shrimp, crabs, lobster, spiders

echinodermata/echinoderms

sea stars, urchins, cucumbers, sand dollars

Meaning spiny skin
radial symmetry
Endoskeleton
Water Vascular System

invertebrates are comprised of

CaCO3

porifera classes

Hexactinellida
Demospongia
Calcarea

cnidaria classes

Anthozoa-- corals, sea anemones
Cubozoa-- Sea wasps, box jellies
Hydrozoa-- hydroids (man-of-war)
Scyphozoa-- jellyfish

ctenophora

name means "comb bearer"
no stinging cells, instead they have adhesive structures called colloblasts
feeding organs
include comb jellies
Radial Symmetry
8 rows of "comb plates"
ctenes
fused rows of cilia

Platyhelmenthes

Flatworms
Most primitive animals with bilateral symmetry
hydrostatic skeleton

Nematoda

Round worms
Move with whip-like motion
Abundant Interstitial Species
hydrostatic skeleton

Annelida

Segmented worms
hydrostatic skeleton
Chaete - bristles (polychaetes)

annelida classes

oligochaeta- earthworms
polychaeta- fanworms
hirudinea- leaches

mollusca classes

Gastropoda--Snails & slugs
Pelecypoda--mussels, clams, oysters
Cephalopoda—squid, octopi
Polyplacophora - Chitons

Brachiopoda

smiley/frowney face shell thing
Lampshells
they are sessile, two-shelled, marine animals with an external morphology resembling pelecypod mollusks
Bilateral symmetry
Attachment structure: attached to the substrate by means of a fleshy "stalk" or pedicle

arthropoda subphylums

1) crustacea
Class Malacostraca— lobsters, crabs, shrimp
2) chelicerata
Class merostomata— horseshoe crabs
Class pycnogonida— sea spiders

class Malacostraca

lobsters, crabs, shrimp

Class merostomata

horseshoe crabs

Class pycnogonida

sea spiders

echinodermata classes

Asteroidia--starfish/sea stars
Echinoidea--sea urchins and sand dollars
Holothuroidea--sea cucumbers
Ophiuroidea--brittle stars and basket stars
Chrinoidea-- feather stars and sea lilies

Chordata subphylum

Urochordata/Tunicates

Body wall covered by leathery tunic
2 siphons
Filter feeder
Nerve chord on larvae
Adult: sessile
Includes sea squirt, sea grape, sea liver, sea pork

fiddler crab

South Carolina state shell

lettered olive
(Oliva Sayana)

barnacle

Phylum: Arthropoda
Subphylum: Crustacea

clam worm

creepy annelid worm thing with palps tentacles

whelk

type of sea snail
mollusca

channel whelk

knobbed whelk

conch

type of sea snail
mollusca

difference between conches and welks

conches open up on the left
welks open up on the right

moon snail

predatory snails
like the scary one in the tank

giant Atlantic cockle

lulz

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