A new pollution problem has surfaced in Guanabara Bay, the venue for sailing in the Rio de Janeiro Olympics.

The head of sailing's governing body threatened Saturday to move all Olympic sailing events out of polluted Guanabara Bay unless the water is cleaner and floating rubbish is removed.

At least 30 boats of all sizes paraded across Rio de Janeiro's Guanabara Bay to protest contamination in the waters where where sailing events will be held next year during the Olympic Games.