As is the case for the Polar regions it is only in recent years that a start has been made in attempting to recover these maritime raw material reserves in large quantities.
Kwimeko yommandla wencam yomhlaba bekukule minyaka idlulayo apho isiqalo besenziwa sokufumana kwakhona ezaselwandle imveliso ezibekelwe bucala ngobuninzi bazo.