Deep South Reef
Protected Area
Conception Island National Park
Why dive here
With 362+ marine species recorded in the area - including barracuda, blacktip reef sharks, dolphins, dwarf minke whales and humpback whales - Deep South Reef offers some of Long Island's richest reef diving. Water ranges 25-30°C, warmest July, August, September.
Deep South Reef definitely lives up to its name. You're looking at a deeper dive here, suited for advanced divers comfortable with potential currents. The main attraction is a healthy coral reef system, sloping down into the blue, where we’ve often spotted larger pelagics cruising past. If you're keen to explore beyond the usual shallow reef dives, this one delivers.
Reviews for Deep South Reef
Conditions
Ocean conditions, forecast and tides for Deep South Reef
Deep South Reef Ocean Conditions
Monthly averages for Deep South Reef, sourced from Copernicus Marine satellite data
August Averages
Sea Temperature
30.01°C
86°F
Current Speed
13.34 cm/s
Direction: N (347°)
Chlorophyll-a
0.044 mg/m³
Very clear (oligotrophic)
Salinity
36.67 PSU
Data sources: Copernicus Marine Service (EU)
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