Environmental groups are putting pressure on liner operators and major retailers that use their services to find the way to zero-emission shipping as soon as possible.

Stand.earth and Pacific Environment have urged 15 major container-ship operators and Walmart, Target, Amazon and Ikea to work together toward that goal.

The US-based green organisations named operators CMA CGM, AP Moller-Maersk, Mediterranean Shipping Co, Evergreen Line, Cosco Shipping Lines, Yang Ming Marine Transport and Hapag-Lloyd in the call.