Chimphona chachikulu cha 'gravity hole' chomwe chili m'nyanja ya Indian Ocean chikuwonetsa nyanja yakale yomwe yatha
Kwa zaka zambiri, asayansi akhala akudabwa ndi mmene dzenje la mphamvu yokoka linayambira m’nyanja ya Indian Ocean. Ofufuza tsopano akukhulupirira kuti malongosoledwewo atha kukhala pansi pansi panyanja yomwe yatha.