# data[].attributes.body
True tissues
Bilateral symmetry
Coelomates
Deuterostomes (anus develops first)
Notochord, hollow nerve cord, pharyngeal slits, and post-anal tail are present in development
These develop into the vertebra, spinal chord, gills, and tail, respectively, in marine animals
No segmentation
Full digestive system
Classes are reptilia, mammalia, amphibia, agnatha, and chondricthyes
Examples: Bony fish, shark, lancelet

# data[].attributes.body
True tissues
Radial symmetry in adults but bilateral symmetry in larvae
Coelomates
Deuterostome (anus develops first)
No segmentation
Water vascular system
Mouth on ventral side, anus on dorsal side
Possess gills usually
No nervous system
No excretory system
Digestive system is complete
Examples: starfish, sea urchin, sea cucumber

# data[].attributes.body
True tissues
Bilateral symmetry
Coelomate
Protostome (mouth develops first)
Possess an exoskeleton
Have segmented body
Their appendages are typically jointed
Open circulatory system
Body can be divided into head, thorax, and abdomen
Complete digestive system
Sexes are separate
Possess gills
Examples: crab, lobster, Cray fish

# data[].attributes.body
True tissues
Bilateral Symmetry
Body cavity enclosed by mesoderm (coelomate)
Protostome (mouth develops first)
Unsegmented body with distinct head
Calcium carbonate shell
Complete digestive tract
Possess gills
Sexes can be separate or hermaphrodite
Mantle covers body
Examples: Squid, octopus, slug, clam

# data[].attributes.body
True tissue
Bilateral Symmetry
Body cavity in the mesoderm (coelomate)
Protostome (mouth develops first)
Segmented Exterior
Usually 1-3 mm in length
Commonly known as ringed worm
The marine class of Annelida is the polychaetes
Uses parapodia for locomotion

# data[].attributes.body
Acoelomates (no body cavity)
Bilateral symmetry
True tissues
Generally known as flatworms
The aquatic class of platyhelminthes is known as Turbellaria
One single digestive cavity
Dorso-ventrally flattened
Reproduction is often hermaphroditic

# data[].attributes.body
Very small
Sections of the organism are head, neck, body and foot
Cilia located near mouth for feeding
Body cavity not enclosed by mesoderm (pseudo-coelomates)
Bilateral Symmetry
True tissue

# data[].attributes.body
Radial Symmetry
Distinct true tissues
Mesoderm
One digestive opening
Jellyfish, Sea anemones, and coral
Feed using tentacles and nematocysts to catch prey
No true muscle cells

# data[].attributes.body
No true tissues
Radial Symmetry
Mostly consists of sponges
Sexual reproduction
Able to regenerate
Diploblastic
Cylindrical in shape