The castaways had an early breakfast. Then all seven of them took supplies and went to the top of the grassy hill. They sat at the top watching. Since the hill had no vegetation larger then grass they could see if any 150 pound lizards were coming up.

After a while it got sort of boring. The Skipper said "Gilligan we need to go to the Minnow and get the fresh water tank so we can have enough fresh water for all seven of us on the trip."

Gilligan said "We're all going? I didn't know we decided."

"We hadn't before. Now do you want to leave anyone with a Komodo dragon?"

"No. But to get the tank now we'd have to go out there and the dragon's out there! Not a good idea Skipper."

The Skipper pondered Gilligan's logic.

Then they saw some small birds fleeing out of the tree line. "Something's spooked them." Ginger said.

"Yes. Them too." Observed the Professor as he pointed. Two chimpanzees hurried into the clearing.

Mary Ann said "Gilligan. Is that your friend Gladys?"

Gilligan said "Yes. But we don't hang out much anymore. She and Howard are steady now." He pointed to the other chimp.

The Skipper said "Gilligan. That means the Komodo dragon is there." He pointed.

The Professor observed "Something more powerful than two chimpanzees chased them away."

The Skipper said "So now it's our chance to go the other direction to the Minnow and grab the fresh water tank."

Ginger had no trouble reading Gilligan's expression. He was thinking hard. But he couldn't find a flaw in the Skipper's reasoning. So he said "Okay. Let's go."

The two of them walked off.

The chimps reentered the tree line. Later Ginger again observed some small birds flying away and the chimps again rushed into the clearing. This time the chimps retreated farther. A gorilla came into view and checked under a log for insects.

Ginger had a thought. Then she began to worry. She asked "Unh Professor. Could that gorilla have scared off two chimpanzees?"

The Professor said "Yes."

Everyone's face sank as they had the same idea. The Professor said it first "But that makes the Komodo dragon's location unknown. It's the Heisenberg Uncertaintiy Principle all over again."

Mary Ann expressed it the way the others were thinking it. "Oh No! Poor Gilligan and the Skipper."

Ginger nodded while the Howells agreed.

Later the two sailors returned carrying the water tank. But in a subdued manner.

Gilligan explained in an excited and scared voice. "So the Skipper was unscrewing the water tank. Only the door was partially blocked with the Professor's geology samples. So I checked that the opening was wide enough to fit the tank. Only I opened it too far and it hit the Skipper's foot. Then he told me to help by gathering coconuts outside. So I get some down from the tree. Then I drop back to the ground. I pick up the biggest but my feet slip 'cause I was standing on tree roots. So I turn like this and I lose my grip on the coconut." Gilligan acted out his story looking like a drunk, exaggerated shot put competitor. "And I look to see where it went. And it bowled into this 10 foot dragon that was charging me. But he had to slow down because the coconut tripped him. So I run and yell 'Skipper!' Later we outrun it even lugging the water tank. Cause the tank was empty and dragon can't run for long. So we give him a wide berth and come back."

The Skipper looked unnerved himself.

Gilligan added "And it stuck out its' tongue at me. That's insulting. But I was too busy not getting eaten to get mad."

The Professor explained "They don't smell through their nose like we do. They use their tongue to detect smells."

Gilligan said "Oh. I don't feel insulted then."

It was boring up there the rest of the afternoon but no one complained.

Author's Note-Prior Appearances.

Island Gorillas- two in episode 1x22 "Diamonds are an Apes Best Friend". Also another gorilla or one of the same ones were in episode 3x20 "Our Vines Have Tender Apes"

Gladys the Chimpanzee- episode 2x02 "Beauty is as Beauty Does"

(Although chimpanzees are not native to the island, how Gladys got there is never explained in canon. My guess is that evil scientist Dr. Boris Balinkoff got a breeding pair from an unethical source and seeded the castaways' island in case he wanted chimps for future experiments. The gorillas being there can be explained similarly.)