Order Squaliformes

1
Order Squaliformes

• Cookie-cutter Shark
• Spiny Dogfish
• Angel Sharks
• Characteristics

2
Cookie-cutter Shark
3
Spiny Dogfish

• Spiracles are present, but non-functional
• Longest gestation of any marine vertebrate
• Form huge schools and migrate great distances
• Commonly sold as scallops

4
Angel Shark

• Intermediates between sharks and rays
• Depressed body, bottom dwellers

5
Order Rajiformes

• Includes
• Skates
• Guitarfishes
• Sawfishes
• Electric Rays
• Stingrays
• Eagle Ray
• Manta Rays

6
Skates

• Local Species Clearnose Skate (Raja englanteria)

Ocellated Skate (Raja ackelyi)
7
Guitarfish Sawfish
8
Electric Rays

• Electric organ
• May constitute 1/6 body weight
• Modified muscle cells
• Used to stun prey
• Local spp Atlantic Torpedo and Lesser Electric
  Ray

9
Stingrays

• Use disc to dig out invertebrates
• Prey on crustaceans and other inverts.

10
Stingray Stinger

• Shed every few months
• Venom oozes down the spine bathing the wound

11
Eagle Ray
12
Manta Rays

• Cephalic lobes
• Functional limbs on the head used for directing
  plankton
• 22 ft. 4,000 lbs. Max.