they don't they get caught in them all the time
It seems that the greatest danger to dolphins is fishing nets, and to whales it is killing them for certain byproducts.
the biggest threat dolphins are tuna nets that dolphins are gettting caught in fishing nets when catching fish such as tuna
yes.
Japanese, Sharks and fishing nets
Dolphins can be drowned by becoming entangled in fishing nets. They are mammals and have to rise to the surface regularly to breath air.
Tuna
yes,they help get fish into fishing nets
Because of the tuna fishing and over fishing in our seas - dolphins are the innocent bystanders that get killed in the nets
Plastic bags and fishing nets are killing dolphins. Also the plastic holding a six pack together is hurting dolphins.
Human development. Many dolphins die in fishing nets as an unintended catch or die from exposure to pollutants.
Quit eating tuna. The tuna fishing industry catches dolphins when fishing for yellow fin tuna. For some reason the tuna follow the dolphins so the boats look for the dolphin fins when they set the nets. Then, they set off explosive devices to keep the dolphin in the nets and confuse them. As a result they drown in the nets, hurt themselves, and mill around. As the boats pull in the nets to the deck there are big rollers to bring them in and the dolphins that are caught in the nets get crushed in the rollers. The tuna companies say they don't do this any more, but this has proven not to be true. If you look on cans of tuna you will see a little label that state the tuna is "dolphin safe." If you look online there are films and photos where you can see what happens with the tuna boats and the dolphins.
Mosquito nets