Disclosed herein is a device (10) for capturing energy from ocean waves. The device (10) comprises a base (12) adapted for stationary mounting relative to a fluid flow generated by the ocean waves. A drive member (14) is movably connected relative to the base (12) and adapted to be driven in oscillatory rotational motion relative to the base (12). An array of paddles (14c) extend from the drive member (14), such that forces applied to the paddles by the ocean waves drive the drive member in oscillatory rotational motion relative to the base (12), A plurality of removable modular energy transfer mechanisms (20) are associated with the drive member (14) and adapted to be driven by the oscillation of the drive member.