Category: SCUBA

Small marine reserves can work if sanctuary, …

Small marine reserves can work if sanctuary, well located and managed #marineexplorer

Small marine reserves can work if sanctuary, well located and managed #marineexplorer by John Turnbull

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Whilst the most effective marine reserve are large ones, small reserves can work if they are full sanctuary zones, located in sheltered areas with complex habitat, and supported by the local community. Fly Point is Port Stephens is a great example with incredible fish diversity and abundance. See our 2018 paper rdcu.be/IuoS

Corynactis australis jewel anemones coating a…

Corynactis australis jewel anemones coating a boulder #marineexplorer

Corynactis australis jewel anemones coating a boulder #marineexplorer by John Turnbull

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These anemones can be solitary or live in a colony as in this shot. They can also be a range of colours including pink and purple. Related to corals, these anemones are part of the corallimorph family, the members of which are mostly tropical.

Shell surprise! Pagurus sinuatus Hairy Pink H…

Shell surprise! Pagurus sinuatus Hairy Pink Hermit Crab #marineexplorer

Shell surprise! Pagurus sinuatus Hairy Pink Hermit Crab #marineexplorer by John Turnbull

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When we do biodiversity surveys we turn over suspect shells to see if there’s anything living inside. Sometimes we get a hairy surprise! Gordon’s Bay

Anemone cave #marineexplorer by John Turnbull…

Anemone cave #marineexplorer

Anemone cave #marineexplorer by John Turnbull

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North Head Sydney Harbour

Dicotylichthys punctulatus – Three-bar porcup…

Dicotylichthys punctulatus - Three-bar porcupinefish #marineexplorer

Dicotylichthys punctulatus – Three-bar porcupinefish #marineexplorer by John Turnbull

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I’ve noticed these long porcupinefish spend quite a lot of time chilling in grooves and overhangs, then fire into life from time to time. They are slow swimmers, so they seem to lumber along despite their frantically fluttering fins. Sydney Harbour North Head

Barren twice over #marineexplorer by John Tur…

Barren twice over #marineexplorer

Barren twice over #marineexplorer by John Turnbull

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North Head, Sydney Harbour. Noticeable on our surveys this year is the absence of tropical recruits and large fish. Apart from a few super-abundant small planktivores like mado and hulafish, there are very few fish left in these seas

Barren twice over #marineexplorer by John Tur…

Barren twice over #marineexplorer

Barren twice over #marineexplorer by John Turnbull

Via Flickr:

North Head, Sydney Harbour. Noticeable on our surveys this year is the absence of tropical recruits and large fish. Apart from a few super-abundant small planktivores like mado and hulafish, there are very few fish left in these seas

Sydney has gone tropical! Pyura gibbosa sea t…

Sydney has gone tropical! Pyura gibbosa sea tulips in 25 C water #marineexplorer

Sydney has gone tropical! Pyura gibbosa sea tulips in 25 C water #marineexplorer by John Turnbull

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Today’s Reef Life Surveys at Bluefish Point and Old Mans Hat were in warm tropical water; 25 C and about 20 m visibility. Not many tropical fish around though – perhaps we’ll see the annual recruitment more in a few weeks

Gorgonians and bryozoans under an overhang #m…

Gorgonians and bryozoans under an overhang #marineexplorer

Gorgonians and bryozoans under an overhang #marineexplorer by John Turnbull

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Whale Watch Platform

Droopy purple sponge #marineexplorer by John …

Droopy purple sponge #marineexplorer

Droopy purple sponge #marineexplorer by John Turnbull

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Ok no science in today’s post – it’s just a weird sponge. Bare Island