>>6738575>>6738586Penguins in Antarctica are subjected to long periods of darkness because of the angle between Earth and the Sun.
The pineal gland, besides containing the molecule (2,4-DMT) responsible for living beings hallucinating subjective reality (the brain projects all you see/feel/hear/etc.), also produces another molecule called melatonin, which is responsible for regulating sleep cycles.
Since the penguins live in a place where Sunlight is scarce, their pineal glands likely produce a lot of melatonin. It is one of the largest animals with this property that also exists in huge numbers in a remote area already controlled by military. This means penguin pineal glands are an efficient source of melatonin that can be purified through chemical affinity chromatography, and so are a 'resource' from government and military perspective.
Melatonin has some correlation with preservation of the nervous system by inhibiting pineal gland calcification and degenerative diseases like Alzheimer's.
Essentially, their idea was likely investigating the use of extracted penguin brains to make a medication to protect the mind and soul of old people, as well as delay the damage from brain frying bad habits like some drugs.