Hula is a dance form accompanied by chant (oli) or song (mele). It was developed in the Hawaiian Islands by the Polynesians who originally settled there. The hula dramatizes or portrays the words of the oli or mele in a visual dance form.
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Diving helmets are worn mainly by professional divers engaged in surface supplied diving, though many models can be adapted for use with scuba equipment. The helmet seals the whole of the diver's head from the water, allows the diver to see clearly underwater, provides the diver with breathing gas, protects the diver's head when doing heavy or dangerous work.
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