The World Without Us perspective. Chauncey Mabe of the "South Florida Sun-Sentinel" calls the book "one of the most satisfying environmental books of recent memory, one devoid of self-righteousness, alarmism or tiresome doomsaying". Tom Spears of the CanWest News Service concludes "it's more a portrait of ourselves, taken through an odd lens" and "[s]ometimes an obituary is the best biography". The book is categorized as non-fiction science but some commentators emphasize it may be better described as speculative fiction. "The World Without Us" is grounded in environmental and science journalism. Like other environmental books, it discusses the impact that the human race has had
The Sea Hunters: True Adventures with Famous Shipwrecks was not successful, however, it eventually led to the formation of a nonprofit organization named after the fictional agency in his novels, the National Underwater and Marine Agency and dedicated to the discovery of famous shipwrecks around the world. In The Sea Hunters, Cussler documents the search for nine famous shipwrecks while also offering dramatized imaginings on the events that led up to the loss of the ship. To date, the group's most successful find is the discovery of the final resting place of the Confederate submarine Hunley, detailed in Part 6. The Hunley was later raised and is currently