July 8, 2010 (as part of a special event), with its official season premiere on Nickelodeon on March 26, 2011.

SpongeBob Kanciastoporty Sezon 8 Odcinek 1 - That Sinking Feeling | Filmweb.

Watch how the chaotic tunnel-digging leads to the neighborhood's literal downfall in this clip: Watch SpongeBob SquarePants online YouTube TV• Apr 23, 2026 SpongeBob Kanciastoporty | - That Sinking Feeling - Filmweb

The episode is a classic example of "neighborly conflict" where SpongeBob and Patrick's well-meaning but oblivious nature causes unintended chaos for Squidward.

While it is often listed as S8E1 , it was actually the first segment of the 153rd episode of the series overall.