First mention of the Skipper's superstitious beliefs.
This is the first time that an ape - in this case, a chimp - is seen on the island (and the only appearance of a real ape). He is not seen again but a monkey is seen in two season three episodes; first in #3.9; Ring Around Gilligan (who was Boris Balinkoff's Igor); the second was in #3.29; Bang Bang Bang.