In real life, goo is a substance called brine. Brine forms underwater pools of a darker color and higher density because its salinity is several times greater than the surrounding ocean. Since SpongeBob SquarePants takes place underwater, the characters swim and surf in brine since they are already surrounded by seawater.
Frank is a lifeguard. Larry the Lobster, a regular at the beach, also serves as a lifeguard. He can always be found here, either lifting weights, surfing, or lifeguarding. SpongeBob also once serves as a lifeguard in "SpongeGuard on Duty."
Goo Lagoon Sea Caves (2) - A large cavern in Goo Lagoon. The only way to get here is over a rope bridge, from the sand castle. Inside, there are cave drawings.
Weightlifting area - As seen in Lights, Camera, Pants!
Mussel Beach - A part of the beach where all of the bodybuilding fish hang out to lift weights, play volleyball, and Frisbee.
Mount Climb-up-and-Fall-off - A mountain where one climbs up and falls off. It is located near Goo Lagoon Pier, as seen in the episode "Valentine's Day."
Goo Lagoon is where most Bikini Bottom citizens spend their leisure time. In some episodes, there is an orange sign outside the beach that says "Welcome to Goo Lagoon."
It is not an actual lagoon, but is a lake, as seen in many episodes of the series. Activities at Goo Lagoon include surfing, dancing, volleyball, weight-lifting, and tanning. Goo Lagoon does not contain water but instead it contains goo.
When compared to the Sand Mountain ski resort, Goo Lagoon is its summer counterpart. The weather is usually sunny at Goo Lagoon during the summer months. During winter, many people flock to Sand Mountain. At some times, there is very windy weather.
There is a huge boat parking area out at the front of Goo Lagoon, and in Revenge of the Flying Dutchman, there is a bus stop. In the Employee of the Month video game, the beach has a tanning salon, which is run by a fish named Ray. There is a workout area for all of the beach buffs who hang out at the beach, called Mussel Beach.
Events and competitions that the beach holds include the anchor toss competition, a weightlifting competition, a surfing competition, and a sand castle competition.
A well-known lifeguard and beach buff is Larry the Lobster, one of the strongest creatures in Bikini Bottom. He commonly impresses many women as well. He is one of the many lifeguards and beach buffs who works and spends time at Goo Lagoon.
Sheldon J. Plankton of the Chum Bucket planned to open his second restaurant called the Chum Bucket Mega Bucket on Goo Lagoon in the episode "Walking Small." He hired SpongeBob to help demolish the beach's property with assertiveness. However, after SpongeBob discovers Plankton's motives, he regrets his actions and revives Goo Lagoon for everyone, so the new restaurant Plankton planned was never built.
The Flying Dutchman has buried treasure on the beach, as seen in Revenge of the Flying Dutchman.