Blue Hole (Castalia)
The Blue Hole captured the public’s interest because of its size, about in diameter, clarity, vibrant blue hue, and enigmatic "bottomless" appearance. Contrary to prevalent belief, the depth of the Blue Hole is not unknown, but has been sounded and found to be about deep. Water temperature is about throughout the year. Floods and droughts have no effect on temperature or water level. The Blue Hole is fed by a passing underground stream which discharges of water daily into Sandusky Bay to the north, feeding into Lake Erie. The water contains lime, soda, magnesia and iron, and because the Blue Hole is anoxic, it cannot naturally sustain fish. The surrounding terrain is developed on limestone bedrock and exhibits karst topography due to dissolution of the limestone by ground water, creating water-filled sinkholes. The Blue Hole was known to American Indians and was first recorded in history in 1761. Several similar blue holes are known to local residents. The Blue Hole that once was a tourist attraction is now off limits to the public. It is located on the grounds of Castalia Trout Club. It is to be distinguished from another hole similar in size and eerie bluish-green color. This latter hole is owned by the Castalia State Fish Hatchery operated by the Ohio Department of Natural Resources, Division of Wildlife and is open for public viewing.
Blue Juice
Most of the film is set in Cornwall and filmed there, many scenes are actually cut showing several different beaches and villages as if they were all adjoining, allowing the main parts of Cornwall to be incorporated into a single place.
The main location of the Aqua Shack is in Mousehole cut into St Ives, while other locations in Cornwall included a rock high above Chapel Porth for the mystical seaweed scene, Godrevy, Newquay and St Ives for some of the street scenes. The scene filmed at the train station was in St. Erth, just outside Hayle. The map examined by JC, Josh and Dean whilst trying to work out where Terry has gone on the bike shows Godrevey Point and the B3301 road, a few miles north of Hayle. The scene where JC and Chloe argue through the windscreen of the van have is at Trevellas Porth Valley, also known as Blue Hills, between St. Agnes and Perranporth. The location of the second Aqua Shack is Kynance Cove Cafe, at Kynance Cove on Lizard Point. The hotel where Josh and Dean take Terry for the cream tea is the Tregenna Castle Hotel, on the outskirts of St Ives, whilst the village hall scene was filmed at Rose Hill, just off Bunkers Hill in the Downalong area of St Ives.