One of the many creatures of the
• Dolphins are warm blooded
mammals. They have round teeth
and hair on their body, though the
amount of hair they have is very
• Dolphins are part of the cetaceans
family. The cetaceans family
includes both dolphins and
whales. Dolphins are the “toothed
• Dolphins vary in color.
• Adult dolphins grow to be about 8
or 9 feet long.
• Dolphins give birth to a live baby.
How a dolphin breathes
• Dolphins breathe through their
blowhole which is located on the
top of their head.
• Dolphins can refill their lungs in a
fifth of a second. As it breaths,
the air leaves the blowhole at a
speed of 100 mph.
• There are complex nerve cells
located around the hole that sense
when the hole is near air and will
• If water gets into the blowhole, a
dolphin will drown, so powerful
muscles close the hole as a
dolphin dives into the water.
A glance into the Dolphin World
• Click on the picture to view two videos of
More facts about Dolphins
• Dolphins can hold their breath for 5 to 8 minutes.
• Each dolphin has its own whistle that distinguishes it from another. It’s like
having your own finger print.
• Dolphins usually live for 20 years, but some have been known to live for up
• Dolphins sleep partly awake. This means that they rest one side of their
brain at a time.
• Dolphins closest land relatives are the cow, the pig and the deer.
• The gender difference between a male and a female dolphin can only be
seen up close. A women has a mammary slit on the underside for birth.
• The common dolphin can be found in all temperate and tropical seas.
• There are dolphins that live in rivers also, but due to pollution and dams,
river dolphins are in danger of extinction.
The Difference between a Dolphin and a Porpoise
• Dolphins and Porpoise are both members of the whale family.
• Both have teeth.
• The body type of a dolphin and a porpoise are different. A dolphin has a large
• Another way to tell the difference between a dolphin and a porpoise is to look
at their teeth. When a dolphin’s tooth is cut in half, it is round. All porpoises’
teeth are flat.
• A dolphin has a beak-like nose and a curved dorsal fin. A porpoise has a blunt
like nose and has a triangular dorsal fun.
• A Bottlenose dolphin is one type of dolphin.
• They can grow to be 12 feet long and weigh
• A Bottlenose dolphin has a distinct beak, as
you can see in the diagram located to the
• They eat fish and squid; fish that are found
at the surface of the water.
• Click the above picture for activity!
• Dolphins have one main predator, the shark,
but often, dolphins get caught in fishing nets.
• Bottlenose dolphins live in small pods of 12,
but many times a bunch of small pods will
join together to form a huge congregation of
hundreds of dolphins. Bottlenose dolphins
are very social.
• Dolphins can dive down 1,000 feet and can
jump 20 feet into the air.
• They live in warm seas and some temperate
sea waters worldwide.
A wave goodbye from the Dolphins!