Abismo Guy Collet
The Abismo Guy Collet (SP-090) is the deepest cave in South America, and the deepest in the world that is formed in quartzite. Located in a tepui in northern Brazil near the border with Venezuela, this cave was first explored by cavers in 2006 to a depth of 671 meters.
Jarrod Jablonski
Jablonski has been setting records for cave penetration for many years. In 1995 he and Geologist Todd Kincaid pushed the Manatee Springs cave system to . On April 25, 1997, Jablonski along with George Irvine and Brent Scarabin set a new penetration record of in Wakulla Springs. They utilized Halcyon semi-closed circuit rebreathers at an average depth of . In July 1998 Jablonski, again diving with Irvine and Scarabin traveled in Wakulla Springs O-Tunnel. Jablonski and his regular dive buddy WKPP director Casey McKinlay set a world record for the longest ever penetration on a cave dive, at while exploring "Q" tunnel of Wakulla Springs.
This record remains the longest penetration in a deep cave. The new record for the longest penetration at any depth is now held by Jon Bernot and Charlie Roberson of Gainesville, Florida, with a distance of .