[3] The film stars the voices of J. K. Simmons, Jessie T. Usher, Matthew Rhys, Patrick Warburton, Kristen Schaal, Sharlto Copley, John Kani, Dolph Lundgren, and Seal.

(Hydro Marine Military Force), consisting of two cape fur seals: veteran Claggart and tech genius Switch, and a celebrity striped dolphin named Dolph, are tasked by their human superiors with trying to defuse a naval mine.

Due to a seal's color-blindness, Claggart ends up cutting the wrong wire, and the mine immediately blows up once hauled onto their ship, the Good Boy.

After he comes to, he is found by three cape gannets named Diving Dee, Roger, and Mayday, who has been trying to eat a starfish that has been stuck in her mouth for years, who guide him to the wreck of the Good Boy, where Quinn insist Claggart into teaching him how to fight a shark, which he had experienced him do that to Grimes before he passed out, so he can avenge Benji's death.

After some advice by Claggart to assemble a team in order to accomplish his goal, he returns to Seal Island, where he recruits the energetic but eccentric Beth, who prefers and suggests to licking rocks rather than eat barnacles, and the boastful yet cowardly Great Geraldo, who keeps telling everyone that comes his way about escaping an aquarium in Cape Town, but had to leave behind his Asian girlfriend, Magnificent Jing.

Later that night, after being convinced by Quinn, Claggart takes them to Switch's wreck, where he accepts the offer to join them and shows off his latest biotech weapons to help them, including snapping clam grenades, electric eel bolts, pufferfish mines, stolen synchronized watches (Geraldo instead gets a toy watch), barracuda bazookas, pistol shrimps (that shoots a blast of knockout gas when used), and a group of octopuses all named Flicka, who can all turn into a suit that makes anyone invisible.

They arrive at Grimes' lair in a sunken oil tanker by sneaking inside the mouth of Dave, a goofy looking, loud-mouthed basking shark whom they frequently encounter.

of Trade and Industry (DTI), National Film & Video Foundation of South Africa, and Banc of California with worldwide sales by Cinema Management Group (CMG).

[9] While the film was fully created at Triggerfish studios in Cape Town, some of the animation was outsourced to Base FX in Beijing and Johannesburg's Chocolate Tribe handled a portion of the rigging using Maya's mGear and Python tools to give the characters a stop-motion look on the movements.

They said that the film "has laughs a-plenty and a sense of good natured camaraderie in its heart..." not to mention "inspired voice casting" and "the kind of sight gags that look beyond cartoon kids' fare".