According to the wiki, there are 5 cuddlefish eggs that can be found. I have played through the game several times and I have never been able to find the egg that is supposed to be at the center of the sinkhole. What am I missing?

"A large sinkhole can be found southwest from the larger wreck. The Dunes Caves are found within along with a Cuddlefish egg, located right in the center of the sinkhole."