This is a Pacific White Sided Dolphin or “Lag” for short as it is a much easier name to use over a marine radio. These dolphins travel in groups between 20 to 100 but, on occasion, reach numbers of up to approximately 3,000. If you only see a couple, you might want to keep a look out, there are usually more not too far off. Lags travel quickly reaching speeds up to 25 knots (almost 30 mph or 47 kph). They are very acrobatic and their frequent airborne flips and leaps can reach extreme heights.