Examples from literature

• After studying dolphins, people built submarines to move quickly in the ocean and stay under the water for a long time. 
• Dolphins move quickly in the water not only to be safe from danger. 
• Dolphins use their tails to go faster and their fins to change direction. 
• Whales and dolphins look like fish, but they’re really mammals! 
• While many other animals, such as chimpanzees and dolphins, live in groups and communicate, scientists don’t know for certain whether they can talk and share complicated ideas. 
• He notices that the dolphin's bright colors afford a warning to his enemies, and give them a chance of escape. 
• He tapped out a distress call which the dolphins could relay to the swimmers. 
• I tell you there's a shark swimming in these waters—a shark so big that by comparison Port Royal Tom would seem like a dolphin. 
• The dolphin is called, from the swiftness of its motion, the arrow of the sea. 
• We had too much reason to fear, for scarce was the sun set when we saw about twenty men from a desert island advancing towards us, each on the back of a large dolphin.