This shark is looking for its next meal.
Click on image for full size
Windows Original, adapted from Corel Photography
Look out! It's a shark!
Don't worry! Sharks aren't as mean as they look. Sharks are more scared of you than you are of them. Most sharks eat fish or crustaceans. Humans aren't on their menu!
The great white shark is very famous. Movies like Jaws make it well known. Great whites can grow to over 25 feet long! There are not very many left today.
There are many other types of sharks, like the blue, nurse and horn shark. They are all smaller than the great white. The horn shark hides under rocks during the day.
The whale shark is the biggest one of them all! He can grow to 40 feet long! It feeds on plankton and is very slow and peaceful.
Shop Windows to the Universe Science Store!
"Science, Evolution, and Creationism
", by the National Academies, provides fascinating background on these topics for all, and is particularly useful for the Earth and space science classroom. Check our other books
in our online store
You might also be interested in:
The open ocean is the largest area of the marine ecosystem. It reaches from coasts to the middle of the ocean. The living things that survive in the open ocean need to have a way to float or swim in ocean...more
Jupiter's atmospheric environment is one of powerful winds, going 250 miles per hour, and temperatures from -270 degrees to +32 degrees (freezing temperature). These winds make it hard for life forms to...more
In July, 1996 a team of scientists said that they had discovered possible fossils of bacteria in a meteorite named ALH84001 that came from Mars. It was found in Antarctica in 1984 after having landed there...more
Saturn's atmospheric environment is one of powerful winds, going 250 miles per hour, and temperatures from -270 degrees to +80 degrees. With winds like these, it is hard to have peace and quiet. The region...more
The air of Titan is a lot like the Earth's, except that it is very cold, from -330 degrees to -290 degrees! Like the Earth, there is a lot of Nitrogen and other complex molecules. There also may be an...more
Organisms that are able to "make their own food" are called autotrophs, meaning "self-feeders". Some examples of autotrophs are plants and algae (shown in the picture). Both plants and algae use photosynthesis...more
In the warm early ocean, large molecules came together into a form called *coacervates*. Molecules such as these will form coacervates in the same way that beads of vinegar in oil come together. These...more