Cephalopods
(squid, octopus, cuttlefish, nautilus)
(squid, octopus, cuttlefish, nautilus)
What is the only hard part of an octopus' body?
Its beak
What does Cartilaginous mean?
made of cartilage-no bones
What do Crustaceans eat?
They are omnivores, they eat algae, plankton, small fish, etc.
Do gastropods have to have shells?
No, slugs live exclusively without shells
How do clown fish coexist with the sea anemones? (Symbiosis)
They rub themselves on them so that the anemone doesn't try to eat them, and the anemone provides a painful stinging protection against predators
What happens after octopus reproduction?
The female starves to death caring for her eggs, and the male dies of mysterious causes
What is one characteristic of a Cartilaginous fish?
paired fins and nostrils, two chambered hearts, and cartilaginous skeletons rather than bone
How do hermit crabs get shells?
They take the old shells from snails and other shelled creatures who have left them
Where do Gastropods live?
Trick question, they can live on land and in the middle of the ocean, they are found everywhere in the world
what is the Beginning life stage of a jellyfish called?
Polyp stage
Name 1 Defense mechanism used by Cephalopods
Camouflage, ink-distraction, and mimicry
Are all sharks carnivorous?
No, Bonnethead sharks are actually omnivores, meaning they also eat seagrasses and seaweed
How do barnacles find a spot to live?
They allow themselves to drift in the water, and when theye found a spot they like, they secrete a glue like substance and stick themselves to it
How do they breathe?
Some aquatic and all land snails have lungs, but those who don't respire through their gills or a gill
What is the most dangerous species of Jellyfish in the world?
Australian Box Jellies
Where are the Octopus' hearts located?
Their three hearts are located in their heads
Largest Cartilaginous fish
Whale shark
What separates a crab from a lobster?
Lobsters have longer tails and also have swimmeretts, crabs have short tails and no swimeretts, but they do have a movable finger claw unlike lobsters who have fixed claws.
How does the Moon snail get to its prey from outside of the shell?
tiny teeth known as radula in combination with acids
What is a Nematocyst?
A stinging barbed cell in the tentacles used for defense and for catching prey using a deadly toxin that paralyzes
What is one characteristic of a Cephalopod?
Cephalopod means "head-foot" and they are characterized by a completely merged head and foot, with a ring of arms/tentacles surrounding the head
What does a Shark use to hunt for prey?
"Lateral lines" that run down each side of its body allow them to detect changes in pressure, vibrations, and electrical impulses being let off by other creatures. They also have an amazing sense of smell because of their nares
What is one characteristic of a Crustacean?
A segmented body with an exoskeleton, Jointed limbs, two pairs of antennae, gills, etc.
What is one characteristic of a Gastropod?
The "Muscular Foot"in which they use to move
What is one characteristic of a Cnidarian?
Tentacles with nematocysts that sting by pushing a barb carrying a toxin into its victims body