Yes, They use a system called echolocation. In which they let out a series of clicks, when the sound waves hit an object, they bounce back telling the dolphin exactly were it is and what size it is. Using this dolphins can locate fish.
Another answer would be: yes,
Another answer
Dolphins catch their food mainly using two clever techniques which require a highly coordinated team job.
Herding
The first one is called herding and it is performed by a group of dolphins who surround a school of fish to pack them as tightly as possible.
When this is done, dolphins take turns to go through the school and feed one at the time while the others keep the school of fish as packed as possible.
This guarantees that each pass through the school of fish, will be very efficient and the largest amount possible of fish will be taken.
Corralling
The other technique for feeding used by dolphins is called corralling.
This is used when the school of fish is chased by a group of dolphins to shallow waters where they are trapped between the shore and the group of dolphins who push them there. After this, the fishes are easily caught when dolphins take turns to eat.
Dolphins hunt there food when thay know that the y are danger they go to far away until they know they are safe and when they are in dander tnhey look for some food so they can eat and they also feed their little ones.:)
They work togther to catch the food
Yes they will hunt in their groups called Pods
hunt for food
They hunt fish. Pods of dolphins will work together when they find a group of fish and they swim around the fish working them into a ball. Once they have done that they take turns going into the ball and eating the fish. There is an IMX DVD out about dolphins showing them doing this. It is pretty smart.
They attack in pods and they surround the prey .
yes
tuna
Most dolphins live in groups. That makes it easier to hunt. When they find a school of fish, they chase it to a shallow place. Then they swarm out into a line. Then the fish are trapped. They are caught by a line of dolphins. They do not chew with their teeth. They sallow their prey whole.
Dolphins will usually eat fish for their diet. They will be able to do this because they hunt together in packs to catch their food. Dolphins don't eat plankton. They don't have the kind of mouths that'd allow them to filter plankton from the water.
Most dolphins swim in groups, as it gives them many strengths. They can watch each other's backs for danger, scout for food and assist each other in hunting, and scare off predators with their numbers. Dolphins that are not members of a pack will not last long.
You've already answered your own question. Dolphins depend on each other for protection, to help raise their young, and to find/kill food
They use what is called echo location to hunt down food. By making clicking sounds they can bounce the sound waves off of objects under the water thus hunting down prey and killing it
Bottle nosed dolphins hunt individually and as teams. They locate fish by using echo-location, and are fast and agile swimmers, so they can pursue the fish and and catch it in their teeth.