External structure
Regulating body temperature by external means
What is cold blooded
W shaped bands?
What is Myomeres
What are the nerve endings that detect vibration and pressure changes?
Lateral lines
What is the tough, rubbery substance used as a sharks skeleton?
Cartilage
What is the most feared shark?
Great white shark
Fins made of webbed skin supported by rays or spines?
What is Ray fins
What is the plate that protects and covers all the delicate anatomy?
Operculum
What is the term for laying large quantities of eggs in the water?
Spawning
What are cartilaginous fih with jaws called?
Chondrichthyes
What else is the great white shark known for?
The largest carnivorous fih
Single bone surrounded by muscle?
What is lobbed fins
What system works with gills to circulate oxygen throughout the bloodstream?
Circulatory
What is the large gas-filled organ that helps a fih stay suspended in the water?
Swim bladder
What are cartilaginous fish without jaws called?
Cyclostomata
What is the most unusual looking shark?
Hammerhead shark
Overlapping bony plates the protrude from the fih's skin?
What is scales
What system of the fih begins with the mouth?
Digestive
What are the current-generating cells that are inside the electric organ?
Electrocytes
Shark
What shark appears ferocious but usually attacks only when threatened?
Sand tiger shark
Scientist that study fih?
What is Ichthyologists
What system helps maintain proper water balance?
Excretory
What is a light producing organ also known as the bioluminescent?
Photophore
What is the smallest shark?
Dwarf lanternshark
What is the largest known fih?
Whale shark