 The final scene with a giant snail was complicated not only by the poor design of the large prop, but because the island's children had recently been struck by a gastrointestinal epidemic caused by freshwater snails, and mobs of angry locals threw rocks at it.Around this time, Jacobs was hospitalized after having a heart attack.Within a month, filming had fallen 39 days behind schedule in which the production crew had to decamp back to California for reshoots.