Shop Windows to the Universe

Check out the fun Earth science related bumper stickers in our online store! Express yourself!
This manatee is relaxing near the surface.
Click on image for full size
Windows Original, adapted from Corel Photography

Manatees

Manatees and the Dugong (sea cows) are the only herbivorous mammals that live in the ocean. Manatees move between seawater and freshwater. For this reason, many manatees are found just floating (hanging out) near the coast. Unfortunately, many manatees have died because boats travel in these waters too. The boat's propellers which hang below the boat can hit the manatee, killing it.

Manatees are really docile, slow moving animals. They don't do the fast swimming and jumping that dolphins do. When they do move, they use their beaver-like tail to paddle through the water.

Manatees must come to the surface to breathe through their nostrils. They then dive with their lungs full of air and can stay submerged for over 20 minutes.

Manatees eat a variety of aquatic plants. Again, manatees will be at the surface when eating, because many plants float in the top layer of the ocean.


Shop Windows to the Universe Science Store!

Traveling Nitrogen is a fun group game appropriate for the classroom. Players follow nitrogen atoms through living and nonliving parts of the nitrogen cycle. For grades 5-9.

Windows to the Universe Community

News

Opportunities

You might also be interested in:

Traveling Nitrogen Classroom Activity Kit

Check out our online store - minerals, fossils, books, activities, jewelry, and household items!...more

Can there be Life in the Environment of Jupiter?

Jupiter's atmospheric environment is one of strong gravity, high pressure, strong winds, from 225 miles per hour to 1000 miles per hour, and cold temperatures of -270 degrees to +32 degrees (freezing temperature)....more

The possible discovery of Life on Mars

In July, 1996, it was announced that Dr. David McKay, along with a team of scientists at Johnson Space Center (a division of NASA), had discovered possible fossils of bacteria in a meteorite named ALH84...more

The Environment of Saturn

Saturn's atmospheric environment is one of strong gravity, high pressure, strong winds, from 225 miles per hour to 1000 miles per hour, and cold temperatures of -270 degrees to +80 degrees. With winds...more

Can there be Life in the Environment of Titan?

Titan's atmosphere 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

Autotrophs

Autotrophs are organisms that can "make their own food" from an inorganic source of carbon (carbon dioxide) given a source of energy. Most autotrophs use sunlight in the process of photosynthesis to make...more

Coacervates

In the warm primordial ocean, aggregates of amino acids, proteins, and other hydrocarbons came together into a form called *coacervates*. Amino acids will spontaneously form coacervates in the same way...more

Early Life

Over a very long time, gradual changes in the earliest cells gave rise to new life forms. These new cells were very different from the earlier heterotrophs because they were able to get their energy from...more

Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part by the National Science Foundation and NASA, our Founding Partners (the American Geophysical Union and American Geosciences Institute) as well as through Institutional, Contributing, and Affiliate Partners, individual memberships and generous donors. Thank you for your support! NASA AGU AGI NSF