Zig and Sharko

thumb|left|alt=A scene from Zig & Sharko, featuring the main characters.|The major characters in the series (from right to left, as of the third season): Bernie (in the pool), Zig, Marina, and Sharko.

Much of the stories of each episode revolve around an eternal war over Marina between Zig, who attempts to capture her to eat her, and Sharko, who loves her and acts as her bodyguard against Zig's various plans.

Coyote and the Road Runner, in that Zig often makes use of various items or concocts plans based on things he witnesses with Sharko and Marina, but is often foiled in the process by Sharko, bad luck, or a combination of both.

Throughout the first season, much of the plots revolve around the oceans surrounding a tropical volcanic island, in which Marina often spends the day sitting on a rocky pinnacle off the coast during the day, while residing in an underwater home that she shares with Sharko.

In the second season, the plots shifted to the island itself, including its beaches, volcano, and jungle, with some changes for the main characters – Marina takes residence in an ornate, life-sized sandcastle, built by Sharko; Zig and Bernie live with a cargo plane pilot in his crashed plane within the jungle; and Sharko operates as a lifeguard for the aquatic lifeforms who frequent the beaches.

In the third season, the main characters and the island's inhabitants move onto a cruise ship to travel the oceans, where much of the season's plots take place.