In the exclusive economic zone, the coastal State shall have the exclusive right to construct and to authorize and regulate the construction, operation and use of: (a) artificial islands; (b) installations and structures for the purposes provided for in article 56 and other economic purposes;
Infrasound may also be used for long-distance communication in African elephants. These calls range from 15â35 Hz and can be as loud as 117 dB, allowing communication for many kilometres, with a possible maximum range of around 10 km (6 mi).
Image: Flickr/Nils Rinaldi via CC by 2.0. Infrasound is sound below 20 Hz, lower than humans can perceive. But just because we donât consciously hear it, that doesnât mean we donât respond to it; in certain individuals, low-frequency sound can induce feelings of fear or dread or even depression.