A method was devised to vector propulsion of a robotic pectoral fin by means of actively controlling fin surface curvature. Separate flapping fin gaits were designed to maximize thrust for each of three different thrust vectors: forward. reverse. and lift. https://www.lightemupsequences.com/limited-value-Icicles-No-6-Textured-Glass-Dildo-8-5in-Clear-Pink-mega-pick/