Zig, a hyena living on an island, decides to eat the lovely mermaid, Marina, but Sharko, a strong shark, keeps blocking Zig's path.

King Neptune tries to woo Marina, so Zig and Sharko must work together to bring her back.

An oil spill makes the ocean slick and slimy, so Bernie finds a way to get rid of all the oil in the water.

An oil spill makes the ocean slick and slimy, so Bernie finds a way to get rid of all the oil in the water.

Sharko discovers a buried treasure and builds a luxury mansion, then must deal with the treasure's angry pirate owner.

Zig battles a polar bear after the water freezes.

Marina wants a pet, so she adopts Bernie and treats him like a pet.

Zig helps Sharko rebuild Marina's house after it is destroyed.

Zig builds some ships in order to eat Marina.

Marina dreams of being a flight attendant.

Zig and Sharko join forces against a human castaway competing for Marina's affections.

Zig finds interesting objects while digging a tunnel in his latest scheme to catch Marina.

Marina takes up water skiing using Sharko as her "boat"; Zig enlists a crazy dolphin's help to catch her.

Marina nurses Zig back to health after one of Sharko's beatings.

Bernie becomes a surrogate father to a lost herd of baby crabs.

Zig and Bernie disguise an old submarine as a female shark to lure Sharko away from Marina.

Zig and Bernie discover a mannequin on the island, while Marina discovers something much more profound.

A shrimp competes with Bernie as Zig's assistant.

Zig tries to sabotage Sharko and Marina's dinner date.

Zig tries using the active volcano against Marina.

A lighthouse is put up near the island after a fog roll in.

Zig finds a wrecked boat on the shore and uses its cargo of bamboo in his latest scheme.

Zig uses inflatable balloons to get to Marina.

Zig builds a boat out of LEGO-like building blocks to catch Marina.

Marina has to compete with another mermaid for Sharko's affections.

Zig attempts to catch Marina while she plays golf with Sharko.

Zig holds a go-cart race to catch Marina.

Zig enlists several whales in his schemes.

Zig dresses up as Santa Claus to catch Marina.

After Sharko rescues Marina trapped in Zig's swimming pool, they find his lair.

Zig and Bernie find a magician's powerful hat and cane.

Sharko leaves temporally with a hammerhead shark.

A Japanese whaling ship tries to capture Sharko.

A manta ray competes for Marina's affections.

Zig throws Marina a birthday party to trap her; she is angry at Sharko for forgetting her birthday.

A jaguar shows up on the island and tries to coach Zig into becoming buff.

Sharko turns the volcano into a ski resort so that Marina can try out some winter sports.

Zig becomes Marina's butler in an attempt to catch her.

Zig and Sharko must join forces to rescue Marina, who is being taken to an aquarium.

Sharko dresses Zig as a mermaid and forces him to become Marina's companion.

A piranha befriends Sharko and Marina but actually intends to eat her.

Marina becomes friends with a ghost who shows up at her house, to Sharko's dismay.

A tsunami floods the island, and Marina temporarily loses Sharko.

Zig and Bernie build an amusement park to trap Marina.

Zig finds an elephant in a crate washed up on shore and tries to use it in his schemes.

Zig and Sharko find a strange and mysterious place at the bottom of the sea.

Marina babysits a baby octopus.

Zig finds a book of Da Vinci's inventions and tries to use them in his schemes.

Zig returns to Africa to live among his fellow hyenas but finds he doesn't fit in.

Sharko's parents visit; they disapprove of his relationship with a mermaid.

Marina and Sharko go camping, but Zig and Bernie aren't far behind.

Zig uses a shapeshifting jellyfish that washes up on shore in his latest scheme.

Zig volunteers to help rid Sharko's hiccups, as another scheme to get Marina.

Inspired by a TV show, Zig emulates a superhero to trap Marina.

Bernie makes a strength potion to take over King Neptune's castle.

Zig gets knocked unconscious, and dreams he is in a Western.

Neptune wants to build a road to his tennis court, through Marina and Sharko's house.

A "fishy godmother" grants Marina's wish for legs, but it causes more problems than it solves.

Zig and Bernie find a variety of origami creations from a wrecked cargo ship and use them in their schemes.

The shock of an electric eel causes Zig and Sharko to switch bodies.

Bernie makes robot clones of Zig to get Marina, but they can't be controlled.

When Marina becomes a lifeguard, Zig pretends to drown to trap her.

A band of pirates tries to capture Marina.

Zig challenges Sharko to a jousting duel.

Troublemakers

King Neptune makes Marina a singing star; Sharko must team up with Zig to get her back.

Eating bananas causes Zig to transform into a Jekyll and Hyde monster.

When a cruise ship visits the island, Marina and Sharko pose as passengers, pursued by Zig.

Zig gets amnesia and reverts to a baby after getting struck by lightning.

Bernie moves away from the island after a bitter argument with Zig and invites Sharko and Marina to a house party.

Sharko tries to fix Marina's bad haircut before taking her to the opera.

Extraterrestrial fruit juices give Zig and Sharko strange powers.

Zig takes advantage of Marina's shopping addiction by posing as a cab driver.

Marina convinces Sharko to join the police force.

Marina, Sharko, Zig, and Bernie find a rocket and are accidentally shot into orbit, where they meet a deranged astronaut on a space station.

A fisherman arrives at the island and starts kidnapping undersea life to catch scallops.

When Zig gives up trying to catch Marina, Bernie gets the crazy dolphin to lure her to the island.

A shipwrecked boat carries toys, which Zig employs in his schemes. The last episode of season 1 with the old designs.