 The Megamorphs books are narrated by all six members of the Animorphs, in turns, but there is no specific order, unlike the order of narration in the regular series.When Marco sees a news report about a downed nuclear submarine, he and the other Animorphs set out to find it in dolphin morphs.When the warheads in the submarine detonate, however, the group finds themselves transported through time by a "Sario rip", to the era of dinosaurs (the Late Cretaceous period, to be exact).