Second Small Reef
Protected Area
Mitirinchi Island
Why dive here
With 154+ marine species recorded in the area - including hammerhead sharks, sea turtles, tiger sharks and napoleon wrasse - Second Small Reef offers some of Great Barrier Reef's richest reef diving. Water ranges 24-30°C, warmest January, February, March.
Second Small Reef provides a straightforward dive into the Great Barrier Reef's coral structures. You'll find a good variety of the usual reef fish here, along with healthy hard and soft corals. It's a solid choice for a relaxed dive, particularly if you're looking for a quieter spot away from the more crowded sites.
Typical Second Small Reef Dive Profile
Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.
Safety Notes
Strong currents typical this month (avg 30 cm/s). Good buoyancy control essential.
Reviews for Second Small Reef
Conditions
Ocean conditions, forecast and tides for Second Small Reef
Second Small Reef Ocean Conditions
Monthly averages for Second Small Reef, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (-15.65, 145.72) (5km away)
October Averages
Sea Temperature
26°C
80°F · Range: 24.5–29°C
Current Speed
30.07 cm/s
Direction: S (183.8°)
Chlorophyll-a
0.057 mg/m³
Very clear (oligotrophic)
Salinity
35.08 PSU
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data + Copernicus Marine (EU)
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