Students use ultrasonic sensors and LEGO MINDSTORMS NXT robots to emulate how bats use echolocation to detect obstacles. They measure the robot's reaction times as it senses objects at two distances and with different sensor threshold...

Read about bats' characteristics, habitat, diet, behavior, and their unique hearing ability called echolocation. You'll also learn why they are important to humans, the threats they face, and what you can do to help them. Includes audio...

Learn about the over 70 species of Cetaceans, or whales, dolphins, and porpoises in the ocean. Read about their behaviors, strandings, and their special sense: echolocation

This site provides information about the Atlantic Bottlenose Dolphin including what they eat and how they find food using a process called echolocation.

[Free Registration/Login may be required to access all resource tools.] What ultrasound and echolocation are, and how sonar and ultrasonography are used.

The Sound and Light unit provides students with an understanding of sound and light waves through the theme of the "Sunken Treasure," a continuous story line throughout the lessons. In Lessons 1-5, students learn about sound, and in...

A short story about a bat named Echo trying to communicate with other bats.

Megabats are one of the two types of bats, the others being the insect-eating bats. The megabats are fruit bats, and most species cannot echolocate. Learn more about megabats in this well-constructed overview produced by the BBC. This...

Players explore math concepts and must use echolocation, as well as their skills in mapping and coordinates, to help free the bats trapped in dark caves.

Bat Conservation International has 24 biologists, educators, and administrators who are dedicated to their mission to further education, research, and conservation of bats. Dr. Merlin Tuttle and his staff have constructed Bats4Kids to...

Uncover the evolutionary past of the mysterious bats. Find out about their amazing ability to use sonar, the threat of rabies they carry, and conservation efforts to save the species.

Students' understanding of how robotic ultrasonic sensors work is reinforced in a design challenge involving LEGO MINDSTORMS NXT robots and ultrasonic sensors.

Students learn how ultrasonic sensors work, reinforcing the connection between this sensor and how humans, bats, and dolphins estimate distance.

Outlines the characteristics of the bottlenose dolphin, including classification, habitat, behaviors, and conservation.

Here are some interesting photos of and a detailed fact sheet on the Beluga whale.

Dolphin expert Dan Odell answers basic questions about dolphins and their lives.

A comprehensive site that includes a wealth of information on whales, sharks, penguins and squid.

[Free Registration/Login Required] This nonfiction passage describes the job of a chiroptologist, a bat scientist. This passage reinforces essential reading comprehension skills. Opportunities for vocabulary acquisition are also...

[Free Registration/Login Required] This passage describes the responsibilities of a chiroptologist, a person who studies bats for a living. This passage is a stand-alone curricular piece that reinforces essential reading skills and...

At this site, provided by the Contra Costa County Office of Education, you can get the facts on bats and their environment.

Click here at the British Broadcasting Corporation to learn more about the Amazon river dolphin and to examine some nice photos of them.

Just about everyone has watched a Bottlenose dolphin perform on film or in real life. But what else do you know about them? Read this detailed fact sheet to find out more about the Bottlenose.

Great multi-media site from the National Geographic Society with great information, pictures and video of Vampire Bats. Sections include fun facts, video, audio, a map and send a postcard.

[Free Registration/Login Required] This site includes a brief example of how sound detector boats work. It also includes an assessment for students to show their knowledge of using sound waves to predict the depth of water.