Beach Guide

Things to Do

Dean's Blue Hole · cruises, tours & watersports

Freediving
shark dives

The Harbor

tap a boat
Freedive · 2–4 hrs

Freedive Clinic at Dean's

Freedive

Guided freediving instruction at the world's deepest ocean blue hole — from first breath-hold to intermediate depths.

1:00 PM

Next boat

2–4 hrs

Trip

$80

From

Departures · Stella Maris Marina & Clarence Town Dock

LIVE CLOCK

Dock wisdom

·

Stella Maris Resort runs the best diving operation on Long Island — book directly through them.

·

The shark dive at Stella Maris is world-class and extremely well-run — safe and spectacular.

·

Dean's Blue Hole itself has no dive operator on site — all diving is self-organized.

·

Bring your own snorkel gear to the blue hole; rental equipment is only at Stella Maris.

fair winds

Operators are real local fixtures — confirm current sailing times and prices with each operator before you go. Countdowns run on the real local clock and the sunset sail time is computed from tonight’s actual sunset.

At Dean's Blue Hole, the sun sets at 7:50 PM today — about 13h 33m of daylight. Sunrise was 6:17 AM. Live water temperature, surf height, UV index, wind and tide for Dean's Blue Hole update at the top of the conditions page.