Ancient Fish
This fish, with the most basic body form, create significant amounts of slime to help it burrow through prey
hagfish
How can you tell the difference between a skate/ray and a flat shark?
Check where the gills are!
Found on male sharks but not female sharks
Clasper fins
The class that sharks skates and rays are in
Chondrichthyes
This shark has the highest levels of testosterone measured in any animal
Bull Shark
This fish was the first known large predatory organism in ancient oceans
Dunkleosteus
Name two differences between skates and rays
Spine, tail size, birth method, skin features
Single gill slit (vs multiple)
Swim bladder (vs liver)
Bones (vs cartilage)
This anatomical based strategy protects a sensory organ when sharks are actively hunting
Eyes roll back
Name 2 animals that kill more humans than sharks each year
Hippo, Bee, Cow, Mosquito, Jellyfish, Deer, Spider, Horse, Snake
This lobe finned fish, once thought to be extinct, is an important evolutionary connection between aquatic and terrestrial life
Coelecanth
This is the only ray that does not have a true stinger, but relies on its size for protection
Giant Manta
pectoral fins
This color pattern is used by great whites who attack prey from depth
Countershading
These deep sea creatures are thought to be evolutionary ancestors of sharks, and have a variety of strange physical features
Chimeras
Ancient fish developed two key features to help them survive. One withstood evolutionary time and helps with hunting. One died out and was hypothesized as a nutrient storage system. What are thse two features?e
Jaws, Armor
Since their gills are on the underside skates and rays primarily rely on these structures to breathe
Spiracle
These scale like projections give sharks a rough but hydrodynamic skin
Dermal Denticles
These pores covering the snout of the shark are filled with electrosensory gel.
Ampullae of Lorenzini
This is the only known parasitic shark
Cookie Cutter
The name of the era in which 70% of marine life underwent a mass extinction, and armored fishes were lost
Devonian (devonian extinction)
The term that describes how skates are rays are 'flattened'
dorsoventrally
This reproductive strategy includes embryo development in an egg while remaining inside of the parent organism
Ovoviviparous or ovoviviparity
Name three large chondrichtyhes that specialzie in filter feeding strategies
Manta, Whale Shark, Basking shark
This long living shark has a unique relationship with parasites that attach to their eyes
Greenland Shark