History Fridge / MermaidsTheBodyFound

** The Navy wanted to experiment on the mermaids themselves, and avoid a [[Film/DrStrangelove mineshaft gap]].
** They wanted to continue testing the weapon. Period.

** The Navy wanted to experiment on the mermaids themselves, and avoid a [[Film/DrStrangelove mineshaft gap]].

** Or the mermaids are deliberately training them to save humans from drowning. [[HeartwarmingMoment They want us to know they're sick of fighting and want peace]].

** The Navy wanted to experiment on the mermaids themselves, and avoid a [[DrStrangelove mineshaft gap]].

* Okay, so the Navy covered up the existence of mermaids to continue with their sonic weapons tests, right? But wouldn't the ''existence of mermaids'' be far, far more scientifically interesting and potentially useful than a weapon that basically amounts to a sonar pulse on steroids? Why would the Navy continue to test the weapon and orchestrate a massive coverup of the bodies that keep washing ashore instead of just testing the weapon somewhere else in uninhabited waters, like a manmade lake, and allowing the discovery to be made public? Sure, there'd be a little bad press for having killed one, but ''freaking mermaids''!

** It's probably why the mermaids became a migrating species depending on where the larger predators are in the nearby area they would have to keep moving.

** Or the mermaids are deliberately training them to save humans from drowning. [[HeartwarmingMoment They still forgive us for everything we've done to them]].

** Considering how massive Megalodon is, there's pretty much no hope of fighting one off and the HeroicSacrifice was probably only used for that particular predator, which may not have been very common, especially in certain areas.

** Actually, [[http://plato.stanford.edu/entries/altruism-biological/ altruism is a biological necessity.]]

* If having one of their members perform a HeroicSacrifice is supposed to have been the mermaids' only defense against ''Megalodon'', they'd have been eaten into extinction long before human sonic-weapon research could wipe them out: as nothing in the film suggests they evolved into an ExplosiveBreeder species, losing a mature group member every time they encounter such a predator would wipe them out by attrition.

** On a related note, the existance of mermaids would also explain why other marine mammals are equally fond of us; we're familiar enough for them to be comfortable around us.

* If mermaids used dolphins essentially as dogs, then it makes ''perfect sense'' why dolphins would be so friendly towards humans, even saving them from drowning: they recognize humans as relatives of their masters.