sharkssharks shy ocean creatures?. sharks are cartilagenous fish what parts of the human body are...
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SharkSharkss
SharkSharkss
Shy Ocean Creatures?Shy Ocean Creatures?
Sharks are Cartilagenous FishSharks are Cartilagenous Fish What parts of the human body are made of cartilage? Ears Tips of nose Covering at the end of bones Front parts of the ribs Tendons and ligaments Growth plates in children and adolescents
What parts of the human body are made of cartilage? Ears Tips of nose Covering at the end of bones Front parts of the ribs Tendons and ligaments Growth plates in children and adolescents
Anatomy of a SharkAnatomy of a Shark
Sharks belong to a family called Chondrichthyes. The members all have cartilage
rather than bones.
Sharks belong to a family called Chondrichthyes. The members all have cartilage
rather than bones.
MembersMembers
Sharks, skates and the rays There are approximately 700 species.
Sharks, skates and the rays There are approximately 700 species.
Cartilage not BonesCartilage not Bones
Cartilage is lighter than bone and helps the shark to float.
Cartilage is lighter than bone and helps the shark to float.
Unique CharacteristicsUnique Characteristics
Placoid Scales – tiny teeth embedded in skin that point towards the back to the fish. Prevent fish from being eaten from the tail
Ventral gill slits with no covering Very vulnerable area
Spiracles are breathing holes on the dorsal side of the head behind the eyes
Mouth is ventral and used for bottom feeding Pectoral fins help give the fish lift like the wings of a plane.
Placoid Scales – tiny teeth embedded in skin that point towards the back to the fish. Prevent fish from being eaten from the tail
Ventral gill slits with no covering Very vulnerable area
Spiracles are breathing holes on the dorsal side of the head behind the eyes
Mouth is ventral and used for bottom feeding Pectoral fins help give the fish lift like the wings of a plane.
Stingrays and SkatesStingrays and Skates
Most are bottom dwellers in the sand of the Gulf of Mexico and on the Atlantic Coast from the Carolinas to Brazil.
Their tail is used for stabbing prey and enemies.
Stingrays have a spine on their tail, skates do not.
Most are bottom dwellers in the sand of the Gulf of Mexico and on the Atlantic Coast from the Carolinas to Brazil.
Their tail is used for stabbing prey and enemies.
Stingrays have a spine on their tail, skates do not.
Stingrays and SkatesStingrays and Skates
Sharks Comes in all Sizes – about 350 species
Sharks Comes in all Sizes – about 350 species
Whale SharkDwarf Dog Shark
6.5 in up to 59 ft.
Whale SharkDwarf Dog Shark
6.5 in up to 59 ft.
Mermaid Purses?Mermaid Purses?
Shark egg sacs Shark egg sacs
Lemon SharkLemon Shark
Great WhitesGreat Whites
Ocean Acrobats Ocean Acrobats
Tiger SharksTiger Sharks
Garbage Cans of the OceanThey eat anything they can and help keep
the ocean clean
Garbage Cans of the OceanThey eat anything they can and help keep
the ocean clean
The Real JawsThe Real Jaws
Meet the bull shark Meet the bull shark
Bull Sharks in Fresh Water?Bull Sharks in Fresh Water? Bull sharks can live in both the sea and fresh water. They have been found in the Amazon, Ganges, Mississippi and Australian rivers.
Bull sharks can live in both the sea and fresh water. They have been found in the Amazon, Ganges, Mississippi and Australian rivers.
Goblin SharksGoblin Sharks
Found only in deep waters, are extremely
rare, live on fish and octopus, grow to apprx. 10 ft.
Found only in deep waters, are extremely
rare, live on fish and octopus, grow to apprx. 10 ft.
Structure of SharksStructure of Sharks Sharks are living fossils because today’s form closely resembles fossilized forms.
Sharks are living fossils because today’s form closely resembles fossilized forms.
Shark’s AdaptationsShark’s Adaptations
Lateral line organ picks up sound vibrations in the water
Ampullae of Lorenzini pick up the electrical impulses of the nervous system
Streamlined body shape allows them to move quickly through the water
Caudal (tail) fin is used for forward thrust
Lateral line organ picks up sound vibrations in the water
Ampullae of Lorenzini pick up the electrical impulses of the nervous system
Streamlined body shape allows them to move quickly through the water
Caudal (tail) fin is used for forward thrust
More shark adaptationsMore shark adaptations
Teeth are serrated like a steak knife and are used to sever food into smaller pieces
Sharks must be in constant motion or in moving water because they will sink and need the oxygen to keep flowing over their body
Can detect the smell of blood from miles away
Teeth are serrated like a steak knife and are used to sever food into smaller pieces
Sharks must be in constant motion or in moving water because they will sink and need the oxygen to keep flowing over their body
Can detect the smell of blood from miles away
Shark AnatomyShark AnatomyLateral Line Organ
ReproductionReproduction
Fertilization is internal and the shark usually gives birth to live babies, but some sharks produce eggs in cases that they attach to seaweed
Males have claspers to transfer sperm to the female reproductive tract.
Fertilization is internal and the shark usually gives birth to live babies, but some sharks produce eggs in cases that they attach to seaweed
Males have claspers to transfer sperm to the female reproductive tract.
Human InfluenceHuman Influence
Each year over 30 to 100 million shark are killed by nets, for food or for sport.
Each year over 30 to 100 million shark are killed by nets, for food or for sport.
Shark Delicacy’sShark Delicacy’s
ResearchResearch
Researchers combine shark cartilage andcow collagen to make sheet to place over
a burn victim’s skin. The patient’s cells
invade, absorb and replace the sheet with new human skin.
Researchers combine shark cartilage andcow collagen to make sheet to place over
a burn victim’s skin. The patient’s cells
invade, absorb and replace the sheet with new human skin.
ProtectionProtection
Great whites are now protected along the
coast of California, Australia, South Africa
and the Maldives. Wildlife Conservation
Society has begun a tagging program.
Great whites are now protected along the
coast of California, Australia, South Africa
and the Maldives. Wildlife Conservation
Society has begun a tagging program.