Bad Luck Fish

Bad Luck Fish is the twenty-first episode of Season 1, and the twenty-first episode overall.

Synopsis
"Can a fish really be responsible for wrecking Dolos's boat, sinking the Aronnax and almost destroying the Rover? Fontaine believes so - and it's invaded Jeffrey's home on the Aronnax. How can she get rid of it and its bad luck?"

Trivia

 * The real Sargasso sea is known for its dense pockets of seaweed.
 * This is the last episode to date to feature Ant and Will in their civilian clothes.