Gentoo Penguin with chick Gentoo Penguins live in the Subantarctic, nesting on islands such as Heard and Macquarie Island and the Antarctic Peninsula. They are the third-largest penguin, and, like Adelies, are known to steal n...

Gentoo Penguins live in the Subantarctic, nesting on islands such as Heard and Macquarie Island and the Antarctic Peninsula. They are the third-largest penguin, and, like Adelies, are known to steal nest stones from each other. #saef_arc #aurora_expeditions #marineexplorer flic.kr/p/2rRdBBV%F0...

King Penguin King Penguins are the second largest penguin, growing to almost 1 m tall and weighing 18 kg. The adults have striking colouration similar to the Emperor Penguin, but their chicks are a lovely chocolat...

King Penguins are the second largest penguin, growing to almost 1 m tall and weighing 18 kg. The adults have striking colouration similar to the Emperor Penguin, but their chicks are a lovely chocolate colour. #marineexplorer #saef_arc #aurora_expeditions #sydney_science flic.kr/p/2rQWGKj 🧪🦑

Albatross wingspan Albatross wingspans can reach 3 m. They are incredible to watch, as they glide effortlessly without flapping, using the energy in the wind. Antarctic expedition 2025

Albatross wingspans can reach 3 m. They are incredible to watch as they glide effortlessly without flapping, using the energy in the wind. #marineexplorer #saef_arc #aurora_expeditions #sydney_science flic.kr/p/2rQUpAs 🧪🦑

Royal Penguins If I didn't know better I'd say the penguin in the foreground was thinking "ooh that's cold!!". Antarctica expedition 2025

Royal Penguins on Macca. If I didn't know better I'd say the penguin in the foreground was thinking "ooh that's cold!!". #marineexplorer #saef_arc #aurora_expeditions #sydney_science flic.kr/p/2rPW3pM 🧪🦑

Campbell Albatross Antarctica expedition 2025

Campbell Albatross is one of around 20 albatross species, endemic to Campbell Island in the NZ subantarctic region. #marineexplorer #saef_arc #sydney_science #aurora_expeditions flic.kr/p/2rPo4hf 🧪🦑

Elephant Seal moulting Elephant Seals moult once a year in spring. They lose their outer fur layer then re-grow it. During this time they are on land, and are more susceptible to heat loss. Antarctica expedition 2025

Elephant Seals moult once a year in spring. They lose their outer fur layer then re-grow it. During this time they are on land, and are more susceptible to heat loss. #aurora_expeditions #saef_arc #sydney_science #marineexplorer flic.kr/p/2rP2uNd 🧪🦑

Several icebergs of various shapes, light blue and white in colour

As we left the Antarctic region today en route to the NZ Subantarctic islands we were treated to a wonderful display of #icebergs #aurora_expeditions #sydney_science #saef_arc #marineexplorer More pics: www.flickr.com/photos/johnw...

Crabeater Seal Despite their name, Crabeater Seals eat primarily krill. They have specialised teeth for filtering their prey. These two remind me of my Labrador... Antarctica expedition 2025

Despite their name, Crabeater Seals eat primarily krill. They have specialised teeth for filtering their prey. These two remind me of my Labrador... #saef_arc #sydney_science #aurora_expeditions #marineexplorer 🧪🦑 flic.kr/p/2rNkjek

Elephant Seal huddle Antarctica expedition 2025; Macquarie Island

Lots of animals huddle together, from birds to bats, rodents to seals. It can be for warmth and protection from predators... I wonder what is going on here? Elephant Seal huddle flic.kr/p/2rMBxDV #marineexplorer #aurora_expeditions #saef_arc #sydney_science 🧪🦑

Several shots of icebergs

First icebergs today! In order to qualify, bergs need to be at least 5 m high. I think these ones pass the test. You can only see 10% of the ice mass - the other 90% is below the water #sydney_science #saef_arc #aurora_expeditions #marineexplorer

Elephant Seal eyes Elephant seal's big eyes and sensitive whiskers help them to find prey in the dimly-lit depths of the ocean. Antarctic expedition 2025, Macquarie Island

Elephant seals can dive to great depths in order to find prey (over 2000 m). Their large eyes and sensitive whiskers allow them to find prey in low, or even no light. flic.kr/p/2rMbSin #saef_arc #aurora_expeditions #sydney_science #marineexplorer 🧪🦑

Royal and King Penguins, and a seal pup

Spectacular morning ashore on Macquarie Island among the seals and penguins... thanks so much to #saef_arc #aurora_expeditions #sydney_science 🧪🦑 #marineexplorer

Pics of several fishers, a diver doing surveys and a current logger

In our final week of fieldwork at One Tree Island and we have almost completed surveys on 26 sites, with current loggers and microhabitat studies on many of them. A massive thanks to all concerned! 🧪🦑 #SAEF_ARC #SydneyUni #marineexplorer

Damaged corals with some live patches

Whilst there is more dead coral than live, there are signs of growth throughout; small patches of live coral on broken reef, live tips on dead branches. The challenge of course will be when the next heatwave comes. For close ups: www.flickr.com/photos/johnw... #SAEF_ARC #marineexplorer

Inforgraphic showing how marine life hase changed from the 1960s to the 2010s

Our latest paper highlights changes in the marine community at Shiprock in Sydney over half a century. #sydney_science #SAEF_ARC #marineexplorer 🧪🦑
Open access: doi.org/10.1071/MF24...

Goby with shrimp, squid, nudibranch, damsel fish and hermit crab

Wonderful diversity of critters on our surveys today at the Labyrinth, #onetreeisland #sydneyuni #SAEF_ARC #marineexplorer 🧪🦑

some live corals with fish and a diver

Despite extensive damage from the recent cyclone and 2024 bleaching, there are some signs of recovery in the southern GBR #onetreeisland #universityofsydney #SAEF_ARC #marineexplorer 🧪🦑

The photogrammetry stage of our field trip is now well underway, capturing reef complexity and biodiversity in great detail #one_tree_island #sydney_science #marineexplorer #saef_arc 🧪🦑

Cameras on bench

View of lagoon

Getting ready for a day in the field #SAEF_ARC #Universityofsydney ##marineexplorer #@OneTreeIslandRS 🧪🦑