Yes, are born tail first to prevent from taking in water in their lungs
yes
As dolphins are mammals they breath air like us, humans.
dolphins are mammals, not fish. They have lungs, not gills, and breathe air.
Dolphins must go to the surface, because they breathe air. Dolphins are mammals, not fish.
Dolphins are mammals, they Breathe air. If trapped underwater they eventually suffocate or drown.
Dolphins are mammals, which means they are warm-blooded. Warm-blooded creatures thrive better in warm water and this is what most dolphins prefer.
A few dolphins can be found at the Underwater World in Sentosa. The future Integrated Resort (IR) at Sentosa will also have dolphins.
By sending out sound
they can breathe and survive underwater.
No. Dolphins spend three quarters of their time underwater. Dolphins can hold their breath for an unbeliveable time. So they have bigger lungs.
Dolphins have been trained by some militaries for tasks such as locating mines, guarding ships, and assisting with underwater surveillance. They are known for their echolocation abilities and are able to navigate complex underwater environments with ease. However, the use of dolphins in warfare is controversial due to animal welfare concerns.
they use SONAR. :)