A shark is a type of predatory fish found in oceans worldwide. Known for their streamlined bodies and sharp teeth, sharks are apex predators, playing a crucial role in marine ecosystems by regulating prey populations.
They have cartilaginous skeletons, enabling swift and agile movements.
Sharks vary in size, from small species like the dogfish to giants like the great white shark. Some well-known shark species include the hammerhead, tiger shark, and bull shark.
While some sharks pose a danger to humans, most are not aggressive and are essential for maintaining the balance of marine life.
Here you have 20 facts about sharks:
- Cartilaginous skeletons, not bones.
- Cold-blooded; body temp matches surroundings.
- Sharp, replaceable teeth for tearing prey.
- They have sensitive electroreceptors.
- Excellent sense of smell for hunting.
- Streamlined bodies for fast swimming.
- Multiple species, diverse shapes and sizes.
- Powerful jaws with rows of teeth.
- Some species can jump out of water.
- Unique dorsal fin shapes for identification.
- Skin with tiny tooth-like structures.
- Gills extract oxygen from water.
- Most species are solitary hunters.
- Some sharks migrate thousands of miles.
- Top predators in marine food chains.
- Many species give birth to live young.
- Slow reproductive rates; vulnerable to overfishing.
- Highly adapted to their environments.
- Known for occasional attacks on humans.
- Play vital roles in ocean ecosystems.
