In series 1, Sandy claims that he and Kirsten have been married for 17 years, yet in series 2 they celebrate their 20th wedding anniversary. Three years have not gone by.
When Julie approaches Marissa in the Bait Shop Marissa's shirt only has the spaghetti straps. When DJ and Marissa are talking out side there is a strap that runs from the side up around like a halter strap, then when it shows the group swaying to Sandy singing it's back to just the spaghetti straps
During the conversation that Alex and Seth have about Sandy going to visit Alex at the club, Alex's hair changes position multiple times between shots, all without her touching it.
In Season 1, Sandy repeatedly says that he's been married to Kirsten for 17 years; however, in Season 2, "Power of Love," they celebrate their 20th anniversary.
Zach tells Summer that being smart isn't only knowing that Kuala Lumpur is the capital of Indonesia. But actually Jakarta is Indonesia's capital, while Kuala Lumpur is that of Malaysia. This is not a goof because Summer corrects him at the end of the scene.