5e:Shark: Difference between revisions
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}}</ref> [[Acanthodians]] are often referred to as "spiny sharks"; though they are not part of Chondrichthyes proper, they are a paraphyletic assemblage leading to cartilaginous fish as a whole. Since then, sharks have diversified into [[List of sharks|over 500 species]]. They range in size from the small [[dwarf lanternshark]] (''Etmopterus perryi''), a deep sea species of only {{convert|17|cm|in|1}} in length, to the [[whale shark]] (''Rhincodon typus''), the largest fish in the world, which reaches approximately {{convert|12|m|ft|-1}} in length.<ref>{{cite<!-- journal--?|title=Evolutionary pathways toward gigantism in sharks and rays|first1=Catalina|last1=Pimiento|first2=Juan L.|last2=Cantalapiedra|first3=Kenshu|last3=Shimada|first4=Daniel J.|last4=Field|first5=Jeroen B.|last5=Smaers|date=24 January 2019|journal=Evolution|volume=73|issue=2|pages=588–599|doi=10.1111/evo.13680|pmid=30675721|url=https://www.repository.cam.ac.uk/handle/1810/289161}}</ref> Sharks are found in all seas and are common to depths of {{convert|2000|m|ft|-2}}. They generally do not live in freshwater although there are a few known exceptions, such as the [[bull shark]] and the [[river shark]], which can be found in both seawater and freshwater.<ref>{{cite<!-- book --> | }}</ref> [[Acanthodians]] are often referred to as "spiny sharks"; though they are not part of Chondrichthyes proper, they are a paraphyletic assemblage leading to cartilaginous fish as a whole. Since then, sharks have diversified into [[List of sharks|over 500 species]]. They range in size from the small [[dwarf lanternshark]] (''Etmopterus perryi''), a deep sea species of only 17cm<!--{{convert|17|cm|in|1}}--> in length, to the [[whale shark]] (''Rhincodon typus''), the largest fish in the world, which reaches approximately 12m<!--{{convert|12|m|ft|-1}}--> in length.<ref>{{cite<!-- journal--?|title=Evolutionary pathways toward gigantism in sharks and rays|first1=Catalina|last1=Pimiento|first2=Juan L.|last2=Cantalapiedra|first3=Kenshu|last3=Shimada|first4=Daniel J.|last4=Field|first5=Jeroen B.|last5=Smaers|date=24 January 2019|journal=Evolution|volume=73|issue=2|pages=588–599|doi=10.1111/evo.13680|pmid=30675721|url=https://www.repository.cam.ac.uk/handle/1810/289161}}</ref> Sharks are found in all seas and are common to depths of 2000m<!--{{convert|2000|m|ft|-2}}-->. They generally do not live in freshwater although there are a few known exceptions, such as the [[bull shark]] and the [[river shark]], which can be found in both seawater and freshwater.<ref>{{cite<!-- book --> | ||
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Revision as of 19:43, 2 April 2020
Under this broader definition, the earliest known sharks date back to more than 420 million years ago.[2] Acanthodians are often referred to as "spiny sharks"; though they are not part of Chondrichthyes proper, they are a paraphyletic assemblage leading to cartilaginous fish as a whole. Since then, sharks have diversified into over 500 species. They range in size from the small dwarf lanternshark (Etmopterus perryi), a deep sea species of only 17cm in length, to the whale shark (Rhincodon typus), the largest fish in the world, which reaches approximately 12m in length.[3] Sharks are found in all seas and are common to depths of 2000m. They generally do not live in freshwater although there are a few known exceptions, such as the bull shark and the river shark, which can be found in both seawater and freshwater.[4] Sharks have a covering of dermal denticles that protects their skin from damage and parasites in addition to improving their fluid dynamics. They have numerous sets of replaceable teeth.[5]
Well-known species such as the tiger shark, blue shark, great white shark, mako shark, thresher shark, and hammerhead shark are apex predators—organisms at the top of their underwater food chain. Many shark populations are threatened by human activities.List of Sharks
6 Sharks
Monster | Size | Type | Tags | Alignment | HP | CR | Habitat | Marked | Source |
---|---|---|---|---|---|---|---|---|---|
Maw of Sekolah (Individual) | Huge | Monstrosity | Shark | Neutral Evil | 114 | 7 | Coastal, Underwater | Canon, Pointer | Ghosts of Saltmarsh |
Shark Overview | Overview | Beast, Shark | Underwater | Noncanon | Varied | ||||
Giant Shark | Huge | Beast | Shark | Unaligned | 126 | 5 | Canon | SRD-OGL v5.1 | |
Hunter Shark | Large | Beast | Shark | Unaligned | 45 | 2 | Underwater | Canon | SRD-OGL v5.1 |
Reef Shark | Medium | Beast | Shark | Unaligned | 22 | 1/2 | Underwater | Canon | SRD-OGL v5.1, SRD-CC v5.1 |
Shell Shark | Medium | Monstrosity | Shark | Unaligned | 32 | 2 | Underwater | Canon, Pointer | Ghosts of Saltmarsh |
Sources and Notes
- Wikipedia: Shark (accessed 2020-04-02) Licensed: CC-BY-SA. ↑
- Martin, R. Aidan. Geologic Time Accessed: 2006-09-09. ReefQuest. ↑
- Allen, Thomas B.. The Shark Almanac The Lyons Press. ISBN:978-1-55821-582-5 ↑
- Budker, Paul. The Life of Sharks. Weidenfeld and Nicolson. ↑