Sneel_002 is an open-source, biomimetic, locomotive, aquatic robot. The electromechanical design of Sneel_002 mimics the structure and motion of a real water snake, as a test to explore swimming behavior in an undulating linear robot. The inspiration for Sneel_002 originates from a fascination with reptilian forms of motility and the implications of modelling hardware from biological structures and functions. Sneel_002 uses a custom-written software library to propagate an oscillating wave down a line of servo motors that comprise the robot’s body. The current model is a platform for the development of other low-cost snake drones, with semi-autonomous navigational control for waypoint following, and sensing capabilities for obstacle avoidance. Worldwide applications for Sneel_002 include remote marine data collection of salinity / toxicity levels, nuclear level monitoring, pipeline or underwater exploration, fishery monitoring, and oil-collection.