Part of an online exhibit on bats, this section focuses on bat senses: sight, olfaction (smell), echolocation, and hearing.

This clear and concise resource on sperm whales includes a diagram and information on its diet and echolocation.

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...

Provides photographs and a fact card about the river dolphin. Discusses the four species and where they are found, physical features, and communication by echolocation.

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.

California leaf-nosed bats usually use their sense of sight (rather than echolocation) when they are foraging, and resort to echolocation only in total darkness. They fly slowly, close to the ground or to vegetation, and often take...

Echolocation of little brown bats has been well studied since the invention of bat detectors, electronic devices that can "hear" the ultrasonic calls bats make, which are usually beyond the range of human hearing. Little brown bats...

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

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.

This is a personal site from Unique Australian Animals that provides a simple description of a bottlenose dolphin.

Describing some of the reasons that animals make sounds, this website gives concrete examples that make acoustic (auditory) communication easy to understand.

If you're interested in dolphins, then you've come to the right place! Get great information that covers intelligence, physiology, and communication of the dolphin. There are even links to pictures and other sites that contain...