ABSTRACT. – While most octopus species studied are generalist foragers, Octopus cyanea in Hawaii may be a specialist on crabs. Ninety-five percent of prey remains collected from middens in the field were of five crab species, and octopuses foraged for an estimated 112 minutes per day to take 7.6 crabs, or 7 minutes per small crab. In an enclosed pond, four octopuses provided with excess prey averaged 20 crabs at the beginning of an eight-day stay and ended with 4.5 crabs. They foraged for 62 minutes per day at the start, 110 minutes at the end, similar to those animals in the field. Such intake accompanied by low effort is not unusual for octopuses, so O. cyanea may be simply taking preferred prey in an area where they are abundant.