Hammerhead Shark Adaptations and Evolution

The video explores the evolution of sharks, focusing on the unique adaptations of hammerhead sharks. Despite being ancient, sharks continue to evolve, with hammerheads showcasing significant changes like the cephalophoil. This structure, unique in the animal kingdom, aids in sensory enhancements and hydrodynamics. The video discusses evolutionary acceptation, where features evolve for one purpose and adapt for another. Hammerhead sharks' diverse head shapes serve various functions, including improved vision and electroreception. The video concludes with insights into the complex evolutionary history of these fascinating creatures.

How long have sharks been part of the ocean's ecosystems?

• 800 million years

• 600 million years

• 400 million years

• 200 million years

What is the technical term for the hammerhead shark's head shape?

• Cephalothorax

• Cephalopodic

• Cephalophoil

• Cephalopod

Why is it challenging to study the evolution of hammerhead sharks?

• They have no fossil record

• Their fossils are made of bone

• Their skeletons decompose quickly

• They have too many species

What does evolutionary exaptation refer to in hammerhead sharks?

• A feature that is only found in extinct species

• A feature that never changes

• A feature that is unique to one species

• A feature evolving for one purpose and later adapted for another

Which shark species has a head measuring almost half its body length?

• Wing head shark

• Bonnet head shark

• Scoop head shark

• Great hammerhead shark

How do hammerhead sharks primarily detect their prey?

• Using sound waves

• Using electroreception

• Using their eyesight

• Using their sense of smell

What advantage does the cephalophoil provide to hammerhead sharks?

• Stronger bite force

• Improved swimming speed

• Better depth perception

• Enhanced sensory detection

Which species is considered the most primitive among hammerhead sharks?

• Bonnet head shark

• Great hammerhead shark

• Scoop head shark

• Wing head shark

What phenomenon might explain the smaller size of some hammerhead species?

• Neotony

• Gigantism

• Dwarfism

• Metamorphosis

What is the primary diet of greater hammerhead sharks?

• Crustaceans

• Plankton

• Rays and skates

• Small fish