In the process of doing a job that Olly finds "boring," he spots a rare fish and convinces Beth to abandon the job to take chase. When their side trip gets the duo in trouble, they come up with a plan to get back where they need to be and finish the job.
Olly accidentally breaks some fragile coral that Uma has warned him to be mindful of. Rather than admitting to the mistake, Olly hopes remaining silent will make the problem go away. He learns the hard way that it won't.
Skid challenges Olly to stay overnight on the haunted shipwreck, despite warnings from Doug to stay away from the place. Beth, Olly, and Skid soon discover that the ship isn't haunted - but it is dangerous.
Suzy feels badly that her friends can all function beneath the sea and she can't. But when a huge bloom of choking, red algae causes all sorts of problems for the sea life on and in the harbor.
Olly and Skid are having a difficult time cooperating. Then Skid obtains a powerful prototype magnetic device from Shankley - which he immediately misuses - and he soon finds himself covered in all things metal, including Olly.
Olly and Beth are training for their deep sea diving certificates while Skid continuously reminds them he is already certified. However, when Skid is damaged taking Doug down into the Deep Trench, Olly and Beth must pool their knowledge
While on assignment in the Kelp Forest, Olly confronts a "sea monster" - the giant octopus of Kraken fame. As it turns out, he's a pleasant fellow and would like to keep his existence a secret.
Olly and Beth are involved in a demolition project where they get to make lots of noise! However, their noise results in a young whale becoming disoriented and getting lost from his pod. The subs must help him find his way back home - and learn to be a little more considerate of others.
When Beth loses control of her grappling hook and accidentally dents Olly, she feels awful. She feels so terrible, in fact, she becomes reluctant to use her grappling hook at all.
Skid has a hard time keeping up with his friends, until Luseal takes him under her wing and helps him out. Skid remembers this kindness when Luseal gets herself trapped in a fisherman's drag
Olly and the gang rescue a very old lobster, Grandpa Claude, from a lobster trap. They learn that he is about to celebrate his 100th birthday and work to deliver him to the celebration being thrown on his behalf, but it won't be easy.
Beth has a plan to warn her friends about an upcoming storm, but inadvertently fails to warn Ranger. This results in Ranger and his herd of squid being scattered everywhere.
Diver Doug has to leave S.U.R.F. for the day and instructs Skid and the subs to do their chores before he returns. Soon there is a struggle for leadership.
Olly and Suzy discover they can "water ski" together - Suzy pulling Olly across the surface of the water. Before long, it has become an obsession for Olly and he neglects his work.
While helping Ranger herd his squid, Olly develops a strange "oil leak." Beth uses her problem solving skills to uncover the source of this mysterious oil leak.
Brandt's "home" - the current shell on his back - is broken in an accident. His friends go out of their way to find him a new home and make him feel better.
Ranger needs to move his squid to "greener pastures" and Beth asks to join him. Olly is less enthusiastic about going since he thinks it will be boring.
Submarine D is coming to S.U.R.F. and Olly and Beth will perform three simple demonstrations to show their competency. However, Olly gets so excited that he messes up his demonstration by trying too hard.
Doug leaves the subs in charge of babysitting an adorable, but mischievous baby octopus. When the chance to do something more fun comes up, the subs pass off their responsibility to others, with potentially disastrous results.
Luseal gets a bit too competitive trying to show off her acrobatics. When she gets some jet boosters from Shankley, she uses them to enhance her performance, but runs into trouble when she loses control.
