Yet when most people think of these cartilaginous fish, a single image comes to mind: That generalization does sharks a huge disservice, as they have far more variety than that. They range in size from the length of a human hand to more than 39 feet 12 meters long; half of all shark species are less than one meter or about 3 feet long.
And with regard to the author's, with regard to Lily Williams' presented narrative, well textually and from a thematic and content based point of view, I for one very much do consider If Sharks Disappeared rather amazing and marvellous, providing more than enough detail to be enlightening and informatively educational but thankfully never overdoing the info dumping so as to become tedious and slogging to and for the intended age group children between the ages of say five to about eight with potentially difficult vocabulary words also explained in a handy and informative glossary at the back, not to mention that the supplemental information on sharks and the threats many species are facing, as well as the short but concise and intensive bibliography are appreciated and wonderful added bonuses and much augment the teaching, learning and research value and potential of If Sharks Disappeared.
Now while narrationally If Sharks Disappeared has most definitely been a four and perhaps even a five star read for me, the accompanying illustrations, although they are indeed bright, descriptive and colourful, are also visually and aesthetically speaking rather overly cutesy with especially many of the shark species looking quite non predatory and much too cartoon like entertaining and inherently peaceful.
For although I do tend to heartily despise those books on sharks where ALL of the shark images appear as straight out of the movie Jaws, it is also important to remember, to show and depict that sharks, or rather that many species of shark are indeed and in fact serious predators and many of Lily Williams shark images in If Sharks Disappeared, well they really do NOT appear as such and thus do tend to leave me with a rather strange and a bit annoying sense of visual disconnect between text and accompanying images.Sharks don't have a swim bladder like most other fish, so they regulate their vertical position by moving forward.
Another unique aspect of the shark's body is that . Frilled sharks, a long skinny shark that looks like an eel, are among the oldest living species of sharks. Read More Tags: Taxonomy,Frilled Sharks. Scientists think that the most dramatic evolution of sharks took place during the Cretaceous period.
During this time there was an abundance of food, sharks grow, and different species appeared.
Sharks appeared on Earth more than million years ago. As food sources were abundant everywhere, sharks no longer had to stay in one place.
TYPES OF SHARKS. To wrap it up, let's look at some of the types of sharks we've been discussing. Blacktip Sharks are different than Blacktip Reef Sharks (this confused me for quite some time)!
Babies: The mother shark has two uterus. Many sharks begin in the uterus, but the strongest one in each uterus eats all the others before they. In this lesson we'll be exploring three different orders of sharks.
For each one, we'll look at examples of specific sharks, where they live, what. Most sharks bear live young (viviparity), others lay eggs. Several shark species mate the entire year, others prefer certain seasons and regions.
With over species of sharks, there are many different shark sizes and shapes. The largest shark (and also largest fish) is the gentle whale shark (Rhincodon typus), which can reach lengths of 39 feet (12 meters). The smallest is the dwarf lantern shark (Etmopterus perryi) clocking in at only 8 inches long. This tiny shark is found in deep waters off the coasts of Columbia and Venezuela. Types of Shark Live every week like it's Shark Week. Watch, learn and experience Discovery's Shark Week like never before with our new interactive games and tours. Types of Sharks; All About Sharks; Shark Quizzes; Save Sharks; Virtual Reality; Get the Book.
The females of some shark species bear young each year, others stop reproducing at irregular intervals which can last several years.