Neo-Dolphins are the second client species of humans and are mid-way through being genetically engineered. The human uplift board evaluates the physical development and mental achievements of all their clients for purposes of reproductive priority and speeding directed evolution.
Their fins are elongated as a first step toward becoming arms. Most professional neo-dolphins have a neural socket that allows them to directly access controls for computers or machines such as their six-legged walking exo-skeleton as its robotic arms.
Under periods of prolonged stress a new-dolphin may go feral and return to speaking (and thinking) only in the primal sequels and clicks of natural unaltered dolphins. Speaking in Anglic is difficult for neo-dolphins but necessary to convey complex and technical ideas. Trinary is a compromise language between primal and Anglic, invented to help dolphins during the uplift transition.