Tecton Corporation (TTNC) has acquired Endurance Exploration Group, LLC, a development stage company that specializes in subsea shipwreck research, search and survey, inspection and recovery projects, in a share exchange agreement. Established in 2009, Endurance has evaluated over 125,000 shipwreck database entries and other sources to develop a "High Interest" list of approximately 400 shipwrecks and a "Target List" consisting of about two-dozen potential shipwreck projects; and, two of these "Target List" shipwrecks have moved into operational phases, i.e. "Operational List". In 2011, Endurance began to purchase key mid-to-deep-water (500-2…