The first one to conquer the deepest point in every ocean

American explorer Victor Vescovo dives to the bottom of the 5.5-mile-deep Molly trench in the Arctic Ocean by submarine.

Vescovo dives into the Mariana Trench in the Pacific Ocean. (Video: BBC).

Vescovo has made deep dives for the past 10 months in the Pacific, Indian Ocean, South Ocean and Atlantic. His team also visited the Titanic wreck. All dives were carried out by the 12-tonne Deep Sea Vehicle (DSV) Limiting Factor, which dropped from the DSSV Pressure Drop.

The last dive in the "Five Deeps Expedition" project ended on August 24 when the explorer arrived at a site called Molloy Hole about 275 km west of the Norwegian Svalbard Islands. The depth recorded on the dive is 5,550m with an error of about 14m. This is the first time people have approached this place.

Vescovo stands on the roof of the submarine.(Photo: BBC).

During their travels around the world, researchers dropped more than 100 amphibious devices. These are platforms that sink into the sea and record all images and sensors. Five Deeps' scientific team discovered 40 new species. A catalog of biological and water samples awaits analysis in the laboratory, including water samples taken from the five deepest points in the oceans.

Dr. Alan Jamieson is the team leader of the exploration project. He said submarines and landing stations make many measurements of salinity, temperature and depth. The data will help researchers better understand the ocean cycle, helping to improve computer models to predict future climate scenarios.

The DSSV Pressure Drop ship maps the ocean floor as it travels across five oceans. Depth data is sent to an international project to map the entire sea floor by 2030. The Five Deeps Expedition Project also contributes to show the potential of state-of-the-art deep-sea exploration technologies.