Feature one of the ocean's most graceful creatures - dolphins - on your personal checks. These checks feature dolphins swimming the seas and jumping the waves in formations as well as at rest in a pool of water. Dolphins are mammals that can hold their breath for up to an hour and stay under water for up to 15 minutes at a time and they have the greatest lung efficiency of any animal or human. In addition, they are self aware, talk to each other and can locate each other by their signature whistles - their whistle is like their name and is unique to each dolphin. Dolphin Photos personal checks come in single and duplicate formats and matching address labels and checkbook cover are available.