Jumping for Joy - Dolphins Dance Duet in the brilliant blue ocean with breaking waves. RESEARCH DdO:) MOST POPULAR RE-PINS - http://www.pinterest.com/DianaDeeOsborne/water-of-life/ - WATER OF LIFE. Delighting in the blue sea waters:) Dolphins have longer noses, bigger mouths, more curved dorsal fins, and longer, leaner bodies than porpoises. Both have large, complex brains. The orca / killer whale is largest member of dolphin family.