The Aden Gulf, or the “Pirate Alley” area is dangerous for water transport for its pirate activity, while being a vital shipping and global economy waterway. Part of the Arabian Sea between Yemen, Somalia and Djibouti, connected with the Red Sea via the Bab-el-Mandeb Strait, it features 15-28 t°C, salinity 35-37 ‰, monsoons, and rich biodiversity. [...]