Blue holes are a fairly unique thing to see. They are places where the depth drops suddenly. The dramatic increase in the depth makes the water very blue.
Dean’s Blue Hole is located in a town named, Dean, on Long Island. Actually town is not the right word. Dean is more like a small section on the Queen’s Highway without any stores, businesses, or even a gas station. If it weren’t for the sign, you wouldn’t even realize it was there. Its claim to fame is its blue hole, which at 663 feet, is the deepest in the entire world.
Dean’s Blue Hole is located in a town named, Dean, on Long Island. Actually town is not the right word. Dean is more like a small section on the Queen’s Highway without any stores, businesses, or even a gas station. If it weren’t for the sign, you wouldn’t even realize it was there. Its claim to fame is its blue hole, which at 663 feet, is the deepest in the entire world.
The best part of this particular blue hole is that the cliff surrounding it extends for about 100 yards and protects it from the ocean. That means there is never a swell or even waves to deal with. You can come and swim almost any time except during a strong outgoing tide. Then it creates a whirlpool effect that can suck you down under the water. Three people who died here are memorialized with these statues.
This picture gives you a view of what the cliff protecting the hole looks like.
Notice the dramatic color change. As you can see it is only a few feet from the sand to the big drop off. The drop is so steep, you have to put on all your snorkel gear while you are sitting in the sand and then crawl or walk like a duck to the deep part.
The white structure in the center is a diving platform that has several lines leading to the bottom. I am not sure how they were able to secure the lines on the bottom. Going down 663 feet with dive gear is not possible, so I have to wonder how did they do it??? Every year they hold a free diving competition here. They say it is easy to dive down because the air compresses in your lungs as you go deeper making you sink quickly. The tricky part is the fight to get back up. You have to kick hard to force yourself back up while your lungs are screaming for air.
We snorkeled the area. There is about a 30 foot drop off that rings the deep hole. The fish like to swim in the shallower water as there are a few corals growing here. If you look back at the first picture, it is easy to see. The water over the 30 foot drop is a lighter color. We took that picture before we snorkeled. After this drop , it drops again straaaaight down. No way to touch the bottom here!