Blue Shark
Blue Shark
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Blue Shark
The blue shark, a blue bullet that gracefully navigates the vast ocean. Despite their beautiful appearance, they are hunters that play a crucial role in the marine food chain. Let's delve into the surprising ecology of blue sharks, the threats they face, and what we can do to help protect them.
Blue Shark Basic Infomation
| Property | Value |
|---|---|
| Order | Carcharhiniformes |
| Vernacular Names | Blue Shark |
| Class | Chondrichthyes |
| Habitats | Tropical, subtropical, and warm-temperate oceans worldwide |
| Phylum | Chordata |
| Descriptions | The blue shark is a pelagic shark with a vibrant blue coloration and slender body, found in warm waters around the world. |
| Rank | SPECIES |
| Genus | Prionace |
| Conservation Status | Near Threatened |
| Family | Carcharhinidae |
| Taxonomic Status | ACCEPTED |
| Scientific Name | Prionace glauca |
| Kingdom | Animalia |
Size
Adult blue sharks can reach up to 12.5 feet (3.8 meters) in length and weigh up to 550 pounds (240 kilograms). Females tend to be larger than males.
Lifespan
The lifespan of a blue shark is typically 15 to 20 years. However, some individuals are believed to live for over 20 years.
Distribution
Blue sharks are found in temperate and tropical oceans worldwide. They prefer the open ocean and rarely approach coastal areas. They migrate long distances seasonally, following water temperatures and food sources.
Blue Shark Q&A
What kind of shark is the blue shark?
Blue sharks are known for their beautiful blue coloration and slender, torpedo-shaped bodies. Their dorsal side is a vibrant blue, while their ventral side is whitish.
This counter-shading helps them camouflage in the ocean. When viewed from above, they blend in with the blue water, and when viewed from below, they blend in with the sunlight. They are exceptionally fast swimmers and can reach speeds of over 22 miles per hour (35 kilometers per hour)! They use their speed to hunt fish and squid.
What do blue sharks eat?
Blue sharks are carnivores and primarily feed on squid and small fish. They often hunt in groups, sometimes forming schools of hundreds to herd and capture their prey.
They have sharp teeth and powerful jaws, allowing them to easily crush the bones of fish. They also have a keen sense of smell and can detect the scent of blood from miles away.
How do they reproduce?
Blue sharks reproduce through a unique method called ovoviviparity. Ovoviviparity means that the eggs hatch inside the mother's body, and the pups are born live.
Females can give birth to 4 to 135 pups at a time. The pups are independent from birth. They take about 3 years to reach adult size.
[Quiz!] Are blue sharks dangerous to humans?
Blue sharks have been known to attack humans. However, this is usually because they mistake humans for prey.
Blue sharks are curious and may approach humans, but they are generally timid and will not attack unless provoked. If you encounter a blue shark, do not engage or chase it, and calmly leave the area.
[Quiz!] Why are they called 'blue sharks'?
Blue sharks are named for the fact that their bodies turn… green when they die.
The name "blue shark" refers to the color of the shark when it is alive.
[Quiz!] Are blue sharks endangered?
Blue sharks are listed as Near Threatened on the IUCN (International Union for Conservation of Nature) Red List. Their numbers are declining due to overfishing.
In particular, bycatch from fisheries and fishing for shark fin soup, a delicacy in some cultures, are major threats. To protect blue sharks, fishing regulations need to be enforced and their populations need to be restored.
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Blue Shark Type of List
Efforts to Protect Blue Sharks
- Strengthening fishing regulations
- Banning shark finning
- Reducing bycatch
- Establishing marine protected areas
- Raising awareness
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Blue Shark References
Blue Shark Introduction of media used
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Diego Delso, CC BY-SA 4.0, via Wikimedia Commons
%2C_canal_Fayal-Pico%2C_islas_Azores%2C_Portugal%2C_2020-07-27%2C_DD_21.webp?alt=media)
Diego Delso, CC BY-SA 4.0, via Wikimedia Commons
%2C_canal_Fayal-Pico%2C_islas_Azores%2C_Portugal%2C_2020-07-27%2C_DD_23.webp?alt=media)
Diego Delso, CC BY-SA 4.0, via Wikimedia Commons
Jim Benante, NOAA/NMFS/NWFSC/FRAMD/MF, Public domain, via Wikimedia Commons
出羽雀台, CC BY-SA 4.0, via Wikimedia Commons
出羽雀台, CC BY-SA 4.0, via Wikimedia Commons
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