Risso's dolphin (Grampus griseus)

Above: Relatively young adult, dark color with moderate number of scars.
Center: Older adult, color lighter because the body has more scars.
The basic color may vary depending on the individual.
Bottom: Newborn (ok it's a little big, but it's more visible), body with no scars, gray-brown color, with lighter fetal folds which fade after 2 months.