Dunk is afraid to go to the cleaner shrimp when he has a parasite in his mouth.
Gush shows everyone how fast a frogfish can swim
Dunk's cousin Mo, a giant sunfish, comes to visit.
Dunk vows to no longer puff up or get upset.
Tidy's vision of keeping everything neat conflicts with Bubbles, Dunk and Splash's desire to have fun in the kelp forest.
Splash's old school comes to visit the reef. Splash and his friends are impressed by their synchronized swimming abilities and try to duplicate them, but their attempt is complicated by the fact that they all move differently.
After losing Dunk's lucky shell in the abyss without any light to guide them, Splash and friends follow a mysterious light in the distance before realizing that the light is from a firefly squid.
Splash invites his friends on a Reeftown Rangers adventure.
Splash and his friends meet a young sea turtle.
Splash and his friends help a parrotfish save the reef.
Although he has fun exploring the ocean, Splash is happy to be home.
Flo sets the kids out on a mysterious journey to find treasure.
Bubbles meets a decorator crab who helps her with her self-confidence.
Splash and Bubbles help Ripple find his brother, with the help of Zee and a shark.
Maury finds Denny's molted exoskeleton in the reef and fears something is wrong with Denny.
Splash and his friends find a parrotfish while playing at the sandy bed.
Bubbles gets trapped in a treasure chest.
Dunk volunteers to fill in for Mayor Sting when he attends a stingray migration.
Bubbles meets some lipstick tubeworms and Oblo the blobfish.
Chompy the parrotfish wants to try new things when she sees Splash and his friends feasting on a variety of things in the water column.
Bubbles and Ripple meet a jellyfish.
A goby fish and a pistol shrimp come through Reeftown in search of a new home.
Splash thinks the only way to keep Dorsal the dolphin as a friend is if he creates a challenging game.
Gush's long-lost son Wart visits Reeftown; to show how much she appreciates him.
Ripple sets up a full day of special activities for her Papa.
Bubbles takes in a nanoplankton friend who is invisible.
Dunk is determined to get rid of his lucky rock, which he now believes has become a bad luck charm.
Maury mixes up details due to his poor vision.
After visiting a spooky cave, Splash and his friends visit the spookiest place they know, the cave of the old hagfish, who lives deep in the abyss.
Dunk gets spooked by a creature in his home and thinks it's a monster, only to discover a Baby Sea Urchin who is hiding from a giant "Thing" that circles in the waters above the reef - Mayor Sting!
Tidy is exhausted from cleaning up after a little Pacific harbor seal pup named Tyke.
Splash and Bubbles help him out.
Splash and Bubbles go camping and admire the beautiful sparkles in the sky.
The friends play hide-and-seek with little Tyke.
The Friends go into the deep to play with Lu, but find out her light has gone out.
The Friends learn that some fish don't sleep at night.
Dorsal is busy using his echolocation to find food for his pod.
Reeftown holds a talent show where everyone gets a chance to shine.
Dunk's sunburned cousin stops by for a visit.
The friends all pretend to be different kinds of fish, but Finny has a hard time with the game.
Splash and Bubbles bring Gush on an expedition to the Artic Ocean.
A great white shark has a tooth ache, and the friends think Denny can help.
The Reeftown friends wonder about the end of the ocean.
Then they traveled to the Antarctic and make a new penguin friend named Dive.
After Melody the fin whale tells the Reeftown Rangers she's about to go on a migration, they decide to go on a migration vacation too.