Chris and Martin are taking Aviva's sub prototype out for a test drive when it gets sucked into a battle between a Sperm whale and Giant squid, spiraling down into the depths. The brothers want to follow, but their damaged sub can't take that kind of pressure. Aviva develops whale and squid Creature Power Suits, so the brothers can go where no sub has gone before. Science Concept: Pressure is force applied to an area.
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