do not have good eyes and need their echolocation to navigate,
find food and communicate. Echolocation is a technique
that dolphins use to 'see' what is ahead of them by the
use of sounds. These sounds are released at a rate of
about 300 sounds a second. Their squeals, that are used
by dolphins are for communication and as a way of indicating
their emotional states. Their brains are larger then ours.
tend to live for about twenty years, but some have been
known to live for about forty years When dolphins sleep,
they sleep in a semi-alert state by resting one side of
their brain at a time If need be, dolphins can hold their
breath for 5-8 minutes at a time Dolphins can dive as
deep as 200m (that's 650ft)
A dolphin sheds its outer layer of skin every two hours
Dolphins will help sick or injured dolphins as much as
they can Dolphins work as a team if danger is near by.
Every dolphin has its own signature whistle to distinguish
itself from its companions, it's like us using names.