Glitz challenges Ricky to a contest: the first to bring back a shark's tooth to the reef will be called the bravest in the ocean.

Ella's admirer, Babbles, becomes jealous of Ricky, so he sets a trap for his rival and gets caught in a jam.

When Albert and his pilot fish, Alpha, won't stop fighting, Ricky and Ella find Alpha a new job with a barracuda, but the pair drives everyone crazy.

Thirsty for adventure, Ricky dreams of leaving the reef and fighting fearsome predators, so Sammy must find a way to show him he is still too young.

When a terrifying unknown creature attacks the reef, Big Boss plays protector and makes a move to take over, but the children smell something fishy.

When Ricky and Ella hunt for a magnifying glass for Pipo's nearsighted father, Ella gets locked inside a human hut, and Ricky must save her.