Show:
Tuna
Billfish
Rays
Sharks
Electric Eels
100
What is the shape of the caudal fin in Tuna?
Lunate
100
What percentage does the bill account for their body length?
33%
100
What is the name of the egg case of sting rays?
Mermaid purse
100
What is the skeleton of sharks made of?
Cartilage
100
What kind of respiratory system do electric eels have?
Vascularized
200
What kind of consumers are Tuna?
Tertiary
200
What is the term to describe the build up of toxic molecules such as mercury?
Bio accumulation
200
What is the name for the electroreceptors on rays?
ampullae of lorenzini
200
What is the term used to describe where sharks stand in relation to the food chain?
Apex predator
200
Describe the color scheme of electric eels? What does this color scheme indicate about the environment that they live in?
Brown on the top and orange yellow on the bottom. The water is murky that they inhabit.
300
What family do Tuna belong to?
Scombrinae
300
What family do billfish belong to?
Istiophordae
300
What order do rays belong to?
Batoidea
300
What order do sharks belong to?
Lamniformes
300
What order do electric eels belong to?
Gymnotiformes
400
What protein gives Tuna flesh a red color?
Myoglobin
400
Describe the color scheme of the billfish body? Why is this color scheme beneficial?
Dark blue on top and silver on the bottom. Helps camouflage the organism when you look down on it to the ocean depth and when you look up at the organism toward the sun.
400
What are the characteristics that distinguish rays?
flat bodies, enlarged pectoral fins fused to the head, and the gill slits located on the ventral (under) side
400
What is the name of the skin cells on sharks? What are the three functions of these skin cells?
Dermal Denticles. Protect against abrasions, parasites, and to improve hydrodynamics.
400
What are the two electric producing organs found in electric eels? What is the function of each organ
Sachs- electrolocation Hunters- used to shock prey
500
Why can't Tuna feel pain in their caudal fin?
Their tail is made of bone
500
Describe the hunting behavior billfish exhibit.
Use their sail-like dorsal fin to condense bait fish, then charge into the group by slashing their bill to stun prey.
500
Describe the physical appearance of the sting ray barb? Why does this shape make it difficult to remove?
Arrow shaped with indented serrations. When the barb enters the flesh, when you try to remove it, the serrations rip the flesh as it is pulled out.
500
What is the tissue layer that helps sharks see at night? How do these cells help the shark see at night?
Tapetum Lucidum. Allows more light into their photoreceptors.
500
Describe how electric eels are able to see eels in murky water with poor eyesight?
Electric eels detect any distortion in the electric field they produce based on they electrical impulses emitted from their prey