This made me laugh. A lot.“This is a video taken in 6000 feet of water.
An undersea robot is sawing a 3mm wide slit
(1/10th of an inch…remember that width) in a pipeline.
Inside the pipeline is normal atmospheric pressure
while the pressure outside is 2700PSI (1.3 tons psi).
And then a crab walks by…” [source] Watch the video: [crabvspipe.mpeg || 1.8 MB]