aks ▁in ▁summer . ▁The ▁Z ul ul and ▁coast al ▁region , ▁in ▁the ▁north ▁of ▁the ▁province , ▁has ▁a ▁tropical ▁climate ▁with ▁high ▁hum id ities , ▁supporting ▁many ▁sugar ▁can e ▁far ms . ▁ ▁Be aches ▁of ▁K wa Z ulu - N atal ▁are ▁of ▁world - class ▁quality . ▁The ▁warm ▁coast al ▁climate ▁means ▁that ▁visitors ▁are ▁attract ed ▁to ▁them ▁all ▁year ▁round . ▁Some ▁of ▁the ▁visitors , ▁however , ▁come ▁for ▁the ▁annual ▁late - aut umn ▁or ▁early - w inter ▁" s ard ine ▁run " ▁along ▁the ▁K wa Z ulu - N atal ▁coast line , ▁south ▁of ▁Dur ban . ▁Refer red ▁to ▁as ▁" the ▁greatest ▁sho al ▁on ▁earth ", ▁the ▁s ard ine ▁run ▁occurs ▁when ▁millions ▁of ▁s ard ines ▁migr ate ▁from ▁their ▁sp aw ning ▁grounds ▁south ▁of ▁the ▁southern ▁tip ▁of ▁Africa ▁north ward ▁along ▁the ▁Eastern ▁Cape ▁coast line ▁toward ▁K wa Z ulu - N atal . ▁They ▁follow ▁a ▁route ▁close ▁in sh ore , ▁often ▁resulting ▁in ▁many ▁fish ▁was hing ▁up ▁on ▁be aches . ▁The ▁huge ▁sho al ▁of ▁tiny ▁fish ▁can ▁stretch ▁for ▁many ▁kilometres ; ▁it ▁is ▁pre yed ▁upon ▁by ▁thousands ▁of ▁pred ators , ▁including ▁game ▁fish , ▁sh arks , ▁dol ph ins ▁and ▁se ab ird s . ▁Usually ▁the ▁sho als ▁break ▁up ▁and ▁the ▁fish ▁disappear ▁into ▁deeper ▁water ▁around ▁Dur ban . ▁Scient ists ▁have