This is their baseline. This is what they think is natural because we started modern science with scuba diving long after we started degrading marine ecosystems.
See on nende võrdluste alus. Seda peavad nad loomulikuks, sest moodne teadus tegi sukeldumisega algust alles hulk aega pärast seda, kui me mere ökosüsteeme rikkuma asusime.