Sharks are a type of fish with a distinctive fusiform body shape. Like other fish, they are ectothermic (cold-blooded), live in water, have fins, and breathe with gills. One key difference is that sharks have a skeleton made of cartilage instead of bone. This type of fish is classified as an “elasmobranch”. This category also includes rays, sawfish and skates. Another noticeable difference is that most bony fishes have a single gill slit, whereas few species of shark have 6-7 gill slits.
What is a ghost shark?
Ghost sharks, also known as Chimeras and spookfish, are a group of cartilaginous fish closely related to sharks and rays. They diverged genetically from their shark relatives about 400 million years ago. They have long, slender bodies and surprisingly large heads. The maximum observed length of ghost sharks is about 49 inches, but scientists believe they can grow to more than six feet in some cases. Their skin colour ranges from black to pale blue to brownish grey. They have black eyes and smooth, light brown, scale-free skin. They live at depths of 200 to 2,600 meters. Their diet consists mainly of shellfish, molluscs and worms that live on or under the seabed. They are sometimes called “ocean butterflies” because they glide through the water with their large pectoral fins. Ghost sharks are solitary animals, as they usually remain alone.
How many types of sharks are there?
Sharks are key to the health of our oceans and climate. Presently, there are more than 530 species that protect the delicate balance of marine ecosystems, helping to ensure a healthy ocean and climate. Hammerhead sharks, Great white sharks, Tiger sharks, whale sharks, and Bull sharks are a few species commonly recognised by common people.
Where was the new species discovered?
Scientists in New Zealand have discovered this new species of shark which is currently classified as a ghost shark. The discovery was made in an area called Chatham Rise, located to the east of New Zealand. These sharks are named “ghost sharks” due to their pale skin and elusive nature. It is named Harriota Avia after Dr. Finucci’s grandmother.
The ghost shark is a species of shark known for its scary appearance, similar to that of the spookfish. It has light brown smooth scales and is found at a depth of about 2600 meters, which is equivalent to 2.60 kilometres or 8530 feet underwater. Ghost sharks feed on crustaceans and have a pointed beak-like mouth. Scientist Britt Finucci mentioned that ghost sharks live at the bottom of the ocean and do not venture to higher depths.
Importance of discovery.
Dr Britt Finucci, a researcher involved, stated that this discovery is significant because ghost sharks are difficult to find, and not much is known about them or how many of them exist. Learning more about them can help in conservation efforts to protect these rare animals.
