Manta Ray Bommies (North Stradbroke Island)

Moderate risk: Strong tidal currents

The eastern dive sites near Point Lookout (Shag Rock, Flat Rock) are exposed to powerful tidal flows that can sweep snorkelers off course. Moreton Bay side sites like Amity Point are more sheltered.

Moderate risk: Marine stingers

Box jellyfish and irukandji are present in Moreton Bay waters during the warmer months. Stinger suits are recommended from November through May.

Moderate risk: Electric rays under sand

A large population of electric rays buries itself in the sandy patches around the reef — avoid settling on the sand.

Moderate risk: Strong ocean currents

Swell and currents around Point Lookout and open beaches can be powerful, especially during rough conditions. Sheltered coves near Main Beach can turn from calm to dangerous with changing swell.

Moderate risk: Marine stingers (box jellyfish)

Box jellyfish and Irukandji may be present during the warmer months (Nov-May). Stinger suits are strongly recommended.

Moderate risk: Stinger Season (Marine Stingers)

Box jellyfish and Irukandji may be present in Moreton Bay during the stinger season. Wearing a stinger suit is highly recommended from November to May.

Low risk: Sharp reef and rock ledges

The rocky reef formations around Shag Rock and the gorge areas have sharp coral and rock edges that can cause cuts without protective footwear.

Low risk: Swell and surge

Eastern side dive sites experience ocean swell and surge, especially in winter (June–August), making conditions challenging for less experienced snorkelers.

Low risk: Boat traffic

Some dive sites (particularly Shag Rock and Flat Rock) are accessed by boat and share waters with vessel traffic. Snorkelers should remain vigilant near navigation channels.

Low risk: Ocean current

Moderate currents can develop around the rock formation, especially between the eastern and western sides.

Low risk: Swell exposure

Conditions vary by swell direction; the exposed side can experience surge and rougher conditions.

Low risk: Swim-through surge

The cave-like swim-through can have strong surge; assess conditions before entering.

Low risk: Sharks

Grey nurse sharks inhabit deeper waters around the island, particularly in winter. While generally not aggressive to snorkelers, their presence warrants caution near drop-offs and deeper channels.

Low risk: Strong Currents

Tidal currents can be strong around the rocky bommies, especially during tide changes. Less experienced snorkellers should be cautious and stay close to the boat.

Low risk: Sharp Reef

The rocky bommies and reef ledges are sharp and abrasive. Snorkellers should wear protective footwear and avoid touching the reef.

Low risk: Variable Visibility

Visibility can change with tides and weather, ranging from 5-20m. Poor visibility can make navigation around the bommies more difficult.

Low risk: Strong currents at times

Tidal currents can develop around the rock, especially when swell pushes through the swim-through channels. Check conditions with a local operator before entering.

Low risk: Surge in swim-through channels

The cave-like swim-through connecting the eastern and western sides can experience surge, particularly on days with larger swell.