Length: 29 minutes
Aviva challenges Martin and Chris to a fencing duel and tells them to choose their swords. The Bros can't decide, so she tells them if they pick their favorite billfish - swordfish, marlin or sailfish - she'll make them a Creature Power Suit. So they head out on a mission to explore the mysterious world of billfish. Science Concept: Hydrodynamics - the physics of motion and action of fluids.