Total number of arms and tentacles on a squid.
Ten
Means "spiny skin." (Also, the Phylum that starfish are classified in.)
Echinoderm
Cnidarians that are are zooplankton and do not swim but simply float in the water.
Jellyfish
Sessile creatures that come in all different shapes and sizes and are filter feeders in the ocean. (Hint: Handy when washing your car)
Sponges
Cnidarians that are often thought of as plants and called "flowers of the sea." Clownfish love them.
Sea Anemones
Used like a rudder to help squid change direction when swimming.
Fin
A marine echinoderm with five or more radiating arms. The undersides of the arms bear tube feet for locomotion and, in predatory species, for opening the shells of mollusks.
Sea Star
Cnidarians that have waving tentacles (also Greek word meaning "many feet")
Polyps
A partially transparent filter feeder that looks like a rubbery cup with 2 openings. (hint: name of the son of Crush)
Sea Squirt
The skeletons of tiny sea animals; create large formations resulting from many species gathered together building skeletons around themselves.
Corals
The main part of the squid's body containing all the organs.
Mantle
Hollow, thin-walled tubes that end in suction cups and enable echinoderms to move.
Tube Feet
Cnidarians that have dangling tentacles.
Medusa
A kind of bristle worm that builds tubes around itself using bits of sand and shells glued together with mucus.
Tubeworm
Free-living or parasitic worms that are very flat; can split in half to form an exact copy
Flatworms
Tube that squirts out water and waste; primarily used for propulsion and movement through the water
Siphon (also known as the funnel)
A fast moving Sea Star with long, thin, snake-like arms surrounding a central disk
Brittle Star
Stinging cells of a cnidarian that typically cover each tentacle
Nematocysts
Commonly called fire worms.
Bristle Worms
Reproduction in which a part of the parent organism pinches off and forms a new organism.
Budding
Flexible internal shell of squid that is made of chitin; supports muscular tissues & organs and allows for jet propulsion.
Pen
Contains the tube feet on the oral side and used to pry open the shells of bivalves as well as help breathe.
Ambulacral Groove
A colony of hundreds of jelly-like creatures all linked together, making it appear to be just one creature.
Portuguese man-of-war
The phylum that contains earthworms and leeches, worms that are segmented with ring like sections.
Annalida
Swarms of jellyfish.