Equipment: Canon EOS R5 camera, Canon RF 15-35mm f/2.8L IS USM lens (underwater shots), Canon EF 100-400mm f/4.5-5.6L IS II USM lens (topside), Seacam housing, Ikelite DS232 strobe
Settings: Varies per shot, ISO 320
Location: Hopkins Island, South Australia
The Australian sea lion (Neophoca cinerea) is the only pinniped endemic to Australia. The population of this endangered species was estimated at 14,730 in 2010 and declined to fewer than 12,000 by 2025.
They are among the planet’s most charismatic sea lions, but they used to be butchered and used as bait for great white sharks. National and state laws now protect them from being killed, injured, or traded. Gillnet exclusion zones surround all breeding colonies in South Australia. With no specific threats from humans, Australian sea lions are now extraordinarily gregarious and playful in the water, and their light tan fur makes them exceptionally photogenic.
Most in-water encounters with them occur at Hopkins or Grindal Island, which are a few hours from Port Lincoln by boat. They are an easy stop along the way for great white shark enthusiasts on day trips or liveaboard excursions to the Neptune Islands. A splash with Australian sea lions is a heartwarming start to the adventure!
© Alert Diver – Q2 2026