There are sets of bleachers on the sides of the beach, where anyone can watch others lift weights. There are also two changing rooms and the Juice Bar.
Role in series
Larry invites Sandy and SpongeBob to lift weights, and they accept. Sandy and Larry start lifting weights, while SpongeBob lifts a stick with two marshmallows on it to impress the crowd. He then rips his beach pants while lifting it.
SpongeBob uses Anchor Arms to look more muscular, and goes to Mussel Beach to show them off. Sandy decides to enroll him into the 8th Annual Anchor Toss.
When it is his turn to toss the anchor, his Anchor Arms explode, revealing that he was actually really weak.