- The document discusses the deep ocean environments and creatures depicted in Jules Verne's novel "Twenty Thousand Leagues Under the Sea".
- It notes that while the novel depicted scary creatures like giant octopuses that were once thought fictional, giant octopuses do exist in real deep sea environments.
- The deep sea was long unexplored but technological advancements have allowed researchers to explore depths like the Challenger Deep, reaching over 35,000 feet below sea level.