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).
It may be that infrasound is the peacockâs secret call, a way of signalling its whereabouts to other peafowl without alerting predators such as big cats and stray dogs. Could birds with similar tail displays, such as Australia's lyrebird, also be luring their mates with stealthy sounds?