: Mapping and diving on the Blake Spur Wall, various scarps (Tortugas, Key West), and deep-sea sinkholes.

: Underwater depressions that act as unique biodiversity hotspots.

: The expedition took place in 2021, while your specific timestamp (August 22, 2022) aligns with when detailed pacing guides and scientific summaries for educational units covering these deep-sea topics were released. Notable Dive Sites Reef Tracts : Deep-sea coral ecosystems. Blake Spur Wall : A significant geological scarp.

: Investigation of Unidentified Cultural Heritage (UCH) targets to determine if they were historic shipwrecks.

This appears to be a specific timestamped request referring to the expedition led by NOAA Ocean Exploration. The expedition focused on mapping and using Remotely Operated Vehicles (ROVs) to explore the deep-sea habitats off the Southeast U.S. continental margin. Windows to the Deep 2021 Highlights

: To explore unknown and poorly understood deep-water areas of the Southeastern U.S.. Key Discoveries :