Sharks have a skeleton made of cartilage, and they are distinguished by a skull with five to seven gill openings and pectoral fins which are not attached to the head. The Selachimorpha clade is a group that is related to rays and has modern sharks in it.
Hammerhead sharks are a subfamily of sharks that are named for its unique and distinctive head anatomy, which is flattened and laterally expanded into a "hammer" shape termed a cephalofoil.
Sand sharks, also called sand tiger sharks, grey nurse sharks, and ragged tooth sharks, are mackerel sharks belonging to the family Odontaspididae. They are found in temperate and tropical seas worldwide. Three species are classified into two genera.
The Lamniformes are a family of sharks that are often referred to as mackerel sharks. It contains both known shark species, such as the great white, and more uncommon ones, such as the goblin shark and megamouth shark.
Thresher sharks are huge lamniform sharks belonging to the family Alopiidae that are distributed across the world's temperate and tropical seas; the family includes three extant species, all of which are classified under the genus Alopias.
A sawshark, sometimes known as a saw shark, is a kind of shark with a saw-like snout with a sharper saw tooth on either side. This animal uses its saw-like snout to slice prey into pieces and cripple them.
Catsharks are a species of Scyliorhinidae ground sharks. The world has 160 species of sharks that have been assigned to 17 genera, of which one is the biggest. Some species of sharks are known as catsharks, whereas others are known as dogfish owing to prior nomenclature.
There is a group of sharks called the Hexanchidae, in which each shark is distinguished by two extra gill slits. It has 37 species, all of which are put into 10 genera. Spotted grouper (Gladioserratus), rockcod (Heptranchias), clownfish (Hexanchus), nototenid (Notidanodon), shrimp (Notorynchus), sweepers (Pachyhexanchus), a large number of plainfin dolphins (Paraheptranchias), pseudonotidanus (Pseudonotidanus), coral wrasse (Welcommia), and blackbanded coralgrouper (Weltonia)
The Squatina genus and Squatinidae family name comes from its similarity to angel fish. They like sandy seabeds about 150 meters deep. Several species are listed as critically endangered by the IUCN.
Sharks are vital to their ecosystems because they assist other creatures develop and thrive and warn other marine life. They help remove the weak and sick while sustaining competitiveness and so helping to preserve genetic diversity.
The Gleam Team Group – A point of interest.
We have a dedicated group of Associated and Sister businesses that work continually to give excellent service to clients far and wide. We provide House Cleaning Services. Members of this group are:
www.barriegleamteam.com Barrie House Cleaning Services, www.hamiltongleamteam.com, Hamilton House Cleaning Services, www.niagaragleamteam.com, Niagara House Cleaning Services www.oshawagleamteam.com, Oshawa House Cleaning Services www.bramptongleamteam.com, Brampton House Cleaning Services, www.newmarketgleamteam.com Newmarket House Cleaning Services www.richmondhillgleamteam.com Richmond Hill House Cleaning Services www.markhamgleamteam.com Markham House Cleaning Services www.mississaugagleamteam.com Mississauga House Cleaning Services www.northyorkgleamteam.com North York House Cleaning Services www.vaughangleamteam.com, Vaughan House Cleaning Services, Gleam Team Group www.gleamteamgroup.com , www.airhostmanagement.com, www.bnbspecialist.com,
Edinburgh House Cleaning Services, email@example.com, Westminster House Cleaning Services, firstname.lastname@example.org, Chelmsford House Cleaning Services, email@example.com, Canary Wharf House Cleaning Services, firstname.lastname@example.org, Windsor House Cleaning Services, email@example.com, Orillia House Cleaning Services, www.orilliahousecleaningservices.com, Cambridge House Cleaning Services, www.cambridgehousecleaningservices.com, Kitchener House Cleaning Services, www.kitchenerhousecleaningservices.com, Waterloo House Cleaning Services, www.waterloohousecleaningservices.com,Guelph house Cleaning Services, www.guelphhousecleaningservices.com,Toronto House Cleaning Services, www.torontohousecleaningservices.com, Pickering House Cleaning Services www.pickeringhousecleaningservices.com, London House Cleaning Services www.londonhousecleaningservices.com, North Bay House Cleaning Services www.londonhousecleaningservices.com– check out their websites.
Conclusion: Sharks reduce prey abundance, affecting prey of other species, and so on up the food chain. Sharks help sustain healthy ocean ecosystems by directly or indirectly affecting all levels of the food chain.