PPT-What Do You Know About Sharks?

By Sharon Guynup Summary The article presents facts about the importance of sharks to the environment their size the threat they pose to people the way they hunt and eat their physiology and their relationship to other aquatic creatures. Ridgeback sharks are sharks with an interdorsal ridge (a visible line of raised skin between dorsal fins) Oceanic whitetip shark: young sharks have black mottling on most fins; does not always have i Note: These 4 sharks all have smooth backs with no ridge Species Description Identification Spinner Shark Carcharhinus brevipinna Snout is pointed 1 st dorsal fin originates behind pectoral fins A . By. : . Wajeha. . khan. Table of contents . Chapter 1 :Environment , Chapter 2 :Survival , Chapter 3 : Characteristics , Chapter 4 : Development , Chapter 5 : Breeds , Chapter 6 : Fun Fact. . SARASOTA FINS © 2015 . www.sarasotafins.weebly.com. NOT ALL SHARKS . HAVE BABIES THE . SAME WAY.. How to tell female vs male shark apart:. Males have claspers (circled in red).. By Cole Williamson. Skills of thresher sharks. .Use tail fin to attack or stun prey. .They are very stealthy by staying at bottom of sea. .Can swim up to 30 MPH. Body structure. 16.5- 20 ft. long. Has a huge a, long tale. white . sharks?. Dr Alison Kock. Photo: Jean Tresfon. Populations of large predatory sharks are in decline. Shark populations. Slow growth, late maturity and low reproductive output = vulnerable to human threats . Genevieve Rogan, Austin Marrs, Janet Kim, Joe Liverman. What’s a . shark. ?. There are many different types of sharks, however experts agree that all sharks share a few common characteristics:. -They are all predators. Phylum . Chordata. Class . Chondrichthyes. Subclass . Elasmobranchii. Superorder. . Selachimorpha. Known as “sea dogs” until the 16. th. century. Name “shark” may have come from the . Yucatec. The Amazing History Of The Frilled Shark. Scientist believe that frilled sharks have been around just as long or even longer than the dinosaurs!. Even longer than jellyfish! . That is millions of years and that is a very long time .. FeatureIncreasingly, the message of conservation societies that sharks are more threatened by humans than Image problem: Ever since the release of Steven Spielberg’s summer blockbuster 39 years 2 and size depending on the species of shark. ey are direct adaptations for processing food and are tailored to the type of diet the shark eats. For example, a horn shark has molar-like teeth . khan. Table of contents . Chapter 1 :Environment , Chapter 2 :Survival , Chapter 3 : Characteristics , Chapter 4 : Development , Chapter 5 : Breeds , Chapter 6 : Fun Fact. . A shark is a fish – what is a fish?. Three types of ‘fin’ fish or ‘true fish’:. Jawless fish. : ~ 100 species. Primitive. Lack a jaw, cylindrical and elongated bodies, no scales or paired fins. Few commercial uses. e.g. Eels or snakes. CITES Secretariat. Geneva. CITES Appendices and . Sharks. CITES Appendices. Species* regulated under CITES are divided amongst 3 Appendices. I. II. III. * ". Species" means any species, subspecies, or geographically separate population .