Related video above: A year after the Titan's tragic dive, deep-sea explorers vow to continue
(NewsNation) — A year after the Titan submersible disaster, OceanGate co-founder Guillermo Söhnlein is organizing a new underwater expedition to explore Dean's Blue Hole in the Bahamas.
Söhnlein, who left OceanGate in 2013, now leads Blue Marble Exploration. The company plans to send a manned submersible to the 663-foot-deep underwater sinkhole, often referred to as the "portal to hell" due to local superstitions.