Demo: http://rawgit.com/cartobaldrica/cryptid/master/index.html
Data sources:
Bigfoot Sightings - Bigfoot Field Researchers Organization
Chupacabra Sightings - Locations from "Tracking the Chupacabra: The Vampire Beast in Fact, Fiction, and Folklore" by Ben Radford
Lake Monster and other cryptid data - Wikipedia, CryptoWik
Lakes: Natural Earth Layer
Forest Cover: Google Earth Engine
Plugins:
Storymap.js
Ekko-Lightbox
MiniMap