[Wishlisting/Speculation] A historian weighs in: the New World

[Alleluia]

and that in some shape or form the whale fossils of Atacama Desert (Cerro Ballena) are referenced, even if it's having a nod to Bismark.

Maybe sea serpents instead of whales, and they tie that into the sea serpent fossil we have in Upper La Noscea.

[Iscah]

Funny enough, when they mentioned the cenotes I gleefully blurted their use in human sacrifice and their iconic blue hue being from the dye in those people.

I hadn't heard of that before, but it seems unlikely, or at least not required to create blue water. Water around limestone caves takes on a blue colour from dissolved calcium carbonate (the mineral that creates cave formations) in the water.

Some examples I am aware of that are attributed to entirely natural causes:

Blue Lake in Mt Gambier, South Australia – the description talks about the colour being due to the mineral in the water.

A different Blue Lake at Jenolan Caves, New South Wales – from a river flowing out of the cave system, again (from information I read when I visited the caves) simply attributed to the minerals in the water.