Yes, dolphins like humans and other animals fart or pass gas.
In fact farting is a trait that is common among all mammals.
By passing gas dolphins, humans and other animals are able to release trapped air that has accumulated in the stomach.
The air that eventually builds up into the gas that we expel comes from two main sources.
The second comes from the foods dolphins and other animals eat.
The food is broken down in the digestive system by enzymes, stomach acids and bacteria that are found in the stomach.
As we continue to consume food the products we eat continue to be broken down in our digestive system causing us to develop gas.
In order to get rid of the accumulated gases that build up in our stomach we need to have a way of expelling the gas and the way this is done is by releasing the gas through either the mouth which is commonly referred to as burping or through the anal tract which is commonly referred to as farting or passing gas.
The gases that are expelled when an animal passes gas or farts are composed mostly of hydrogen, carbon dioxide, and methane.
The reason some gasses have a much stronger odor than others has to do with the foods involved in the process.
Certain foods can release terrible odors while other foods may not produce any odor at all when expelled from the body.
From some of the research that has been gathered and from statements biologists have made about dolphins passing gas is that yes dolphins do fart and it usually stinks when they pass gas.
Unlike humans that sometimes have a noisy fart when they pass gas a dolphin fart is suppressed by the water making it silent or much harder to detect by sound when compared to the sound land based animals make when they fart.
A dolphin’s fart can usually be detected by the bubbles or clouds that can be seen rising to the surface of the water when a dolphin passes gas.
Those most likely to witness dolphins farting are likely to be marine biologists, dolphin trainers and researchers involved in monitoring, training and researching dolphins and by people who attend dolphin shows or at the aquarium.
In some cases tourists and dolphin watchers may also experience dolphins passing gas.
Unfortunately not much research has been gathered on this topic and the information that does exist is fairly limited.