G 11.1 Level impulse levels of high low and medium frequency impulsive sounds, introduced into the marine environment human activity is such that it does not lead to long-term negative effects on ecosystems. marine and human activities introducing such sounds are regulated and managed to ensure that there is no impact. significant long-term marine species at population level.

G 11.2 continuous low frequency levels of sounds introduced into the marine environment through human activity are: do not have any long-term adverse effects on marine ecosystems and are such that they are not likely to lead to: the risk of possible behavioural or perceptual impacts on marine species at population level.