Sponges , Cnidarians,Arthropoda, Echnoderms
Sponge - one type of animal that filters the water it lives in to get food.
Example - Venus-Flower Basket,
- reproduce asexually
- can’t move once they attach as adults
- gets food from environment around it.
- between inner and outer layer there is a jelly-like layer
- grow at almost any depth
- grow on hard surfaces
- shaped like fingers, tree branches or round
- filters water to get its food
- 5000 known species
-no real digestive system
Adaptation - body is a network of tiny pores and canals that allow water to filter through to obtain food because they don’t move.
cnidarians -has the ability to sting its prey, carnivorous animals, or meat-eating, poison in tentacles.
tentacles that sting its predators and bring food to mouth (digestive system)
waste leaves through mouth
no organs, cells organized instead of tissues, outer layer is protection and inner layer is used for digestion
live in water
Polyp or Medusa Form
reproduce sexually and asexually
Adaptation - coral produces a skeleton to protect its soft body; some sting its predators with tentacles
Echinoderms - are invertebrates that have internal skeletons and spines sticking out from their bodies
examples: starfish, sand dollars, sea urchins, sea cucumbers
Interval skeletons and spines
live only in the ocean
get oxygen from seawater
most adults appear to have radial symmetry
no head or brain
Adaptation - Mouth is at the center of underside with powerful jaws and hidden among their spines and poison glands. They also have tube feet for moving, feeding and sensing respiration