Whittard Canyon is a submarine canyon off the coast of southwest Ireland that lies between Celtic Sea and Atlantic Ocean. It covers an area of 2,000 square miles (5,200 km2) which span over 80 by 20 miles (129 by 32 km), with overall depth below 1,500 m. Another expedition team from NIOZ also studied that layers with high concentrations of suspended particles in the canyon, which called nepheloid layers, contribute significantly to the transport of matter that formed a good condition for the high diversity of the canyon's fauna.