Ocean cold as water at greater depths. Below the thermocline, water is very cold, ranging from −1 °C to 3 °C. Because this deep and cold layer contains the bulk of ocean water, the average temperature of the world ocean is 3.9 °C. If a zone undergoes dramatic changes in salinity with depth, it contains a halocline. If a zone undergoes a strong, vertical chemistry gradient with depth, it contains a chemocline. The halocline often coincides with the thermocline, and the combination produces a pronounced pycnocline. The deepest point in the ocean is the Mariana Trench, located in the Pacific Ocean
Deepest Blue Case, Planet Funk, Chicane, M Factor, Skin and Melanie Chisholm. Deepest Blue's first single, "Deepest Blue", was released in 2003. It peaked at #7 in the UK Singles Chart, their highest chart entry. Their second single, "Give It Away", reached #9 in the UK chart in early 2004, and #2 in the airplay chart. Their third release, "Is It a Sin", reached the Top 30 in May 2004. Their fourth single, "Shooting Star" was released in August 2004 peaked at #57 in the UK chart. It was used as the backing music for Sky Sports News between 2004 and 2007.