Wild spinner dolphins feed off-shore at night and return to sheltered bays and coastlines during the day to rest, socialize, tend to their young, and avoid predators.
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When sleeping, dolphins often rest motionless at the surface of the water, breathing regularly or they may swim very slowly and steadily, close to the surface. In shallow water, dolphins sometimes sleep on the seabed rising regularly to the surface to breath.
Dolphins have a remarkable long-term memory and can remember specific individuals, sounds, and even tasks they learned in the past. In fact, studies have shown that dolphins can remember things for up to 20 years or more, which is longer than most other animals.