Mountain climbers have long reported a presence that has helped them during challenging times

https://www.themanual.com/outdoors/third-man-syndrome-explained/

Underwater mysteries are not new but can be absolutely enthralling. Beneath the ocean, there are many things we can’t even begin to imagine.

https://www.roughmaps.com/travel/sailors-share-unexplainable-things-theyve-seen-at-sea/