Category: underwater

Southern hermit crab Paguristes frontalis #ma…

Southern hermit crab Paguristes frontalis #marineexplorer

Southern hermit crab Paguristes frontalis #marineexplorer by John Turnbull

Via Flickr:

A large hermit crab found on Australia’s Great Southern Reef, distinguished by its lack of hairs and large left claw. Port Noarlunga South Australia. reeflifesurvey.com/species/paguristes-frontalis/

Healthy balance of urchins and kelp #marineex…

Healthy balance of urchins and kelp #marineexplorer

Healthy balance of urchins and kelp #marineexplorer by John Turnbull

Via Flickr:

Whilst there are major concerns about the spread of urchin barrens – and rightly so – it is possible for kelp and urchins to achieve a healthy balance in a system with adequate urchin predators. Tinderbox Marine Reserve in Tasmania is a sanctuary zone with many large lobsters to keep urchins in check (I saw 4 on one dive).

Change indicator – Weedy seadragon Phyllopter…

Change indicator - Weedy seadragon Phyllopteryx taeniolatus #marineexplorer #GSRfieldtrip day 42 #UNSWbees

Change indicator – Weedy seadragon Phyllopteryx taeniolatus #marineexplorer #GSRfieldtrip day 42 #UNSWbees by John Turnbull

Via Flickr:

Divers notice charismatic animals like seadragons, so these animals can provide indications of change over time scales exceeding our biodiversity survey data. At two sites we’re surveying in Tasmania, numerous people describe the loss of giant kelp and changes to seahorse and seadragon populations over several decades.

Notolabrus tetricus – Blue throat wrasse in s…

Notolabrus tetricus - Blue throat wrasse in split rock #marineexplorer

Notolabrus tetricus – Blue throat wrasse in split rock #marineexplorer by John Turnbull

Via Flickr:

Colourful sessile animals like these yellow zoanthids are a feature of Australia’s Great Southern Reef. The colours of the mature male blue throat wrasse aren’t too shabby either. Bicheno, Tasmania

Butterfly perch – Caesioperca lepidoptera #ma…

Butterfly perch - Caesioperca lepidoptera #marineexplorer

Butterfly perch – Caesioperca lepidoptera #marineexplorer by John Turnbull

Via Flickr:

A sea bass found in the southern waters of Australia and NZ. Bicheno, Tasmania

Best hairdo ever on a #seahorse Hippocampus a…

Best hairdo ever on a #seahorse Hippocampus abdominalis #marineexplorer #GSRfieldtrip

Best hairdo ever on a #seahorse Hippocampus abdominalis #marineexplorer #GSRfieldtrip by John Turnbull

Via Flickr:

Kingston beach, Tasmania. Three seahorses at the site, but no weedy seadragons.

Pylons in Port Phillip Bay #marineexplorer #G…

Pylons in Port Phillip Bay #marineexplorer #GSRfieldtrip

Pylons in Port Phillip Bay #marineexplorer #GSRfieldtrip by John Turnbull

Via Flickr:

Beautiful clean sand, colourful algae and invertebrates, seahorses and little fish can be found under Rye jetty, Melbourne.

Pygmy leatherjacket in mussel stealth colouri…

Pygmy leatherjacket in mussel stealth colouring #marineexplorer

Pygmy leatherjacket in mussel stealth colouring #marineexplorer by John Turnbull

Via Flickr:

Ok I’ve seen them kelp-coloured, turf-coloured and seagrass-coloured but this is a first for me – a pygmy leatherjacket adopting mussel colouration! It was hovering in the patch of mussels, beautifully camouflaged, until I noticed that one of the mussels was moving… it seems they get their colour from their habitat not their food.

Pygmy leatherjacket in mussel stealth colouri…

Pygmy leatherjacket in mussel stealth colouring #marineexplorer

Pygmy leatherjacket in mussel stealth colouring #marineexplorer by John Turnbull

Via Flickr:

Ok I’ve seen them kelp-coloured, turf-coloured and seagrass-coloured but this is a first for me – a pygmy leatherjacket adopting mussel colouration! It was hovering in the patch of mussels, beautifully camouflaged, until I noticed that one of the mussels was moving… it seems they get their colour from their habitat not their food.

Jetties – magnets for marine life #marineexpl…

Jetties - magnets for marine life #marineexplorer #GSRfieldtrip #UNSWbees

Jetties – magnets for marine life #marineexplorer #GSRfieldtrip #UNSWbees by John Turnbull

Via Flickr:

As we survey people around the jetties of Port Phillip Bay it’s clear that they appreciate the marine life that is attracted to them. Snorkelers, divers, boaters, walkers and fishers come to these jetties in large numbers – as do fish and invertebrates.