Marine Invertebrates

Marine Invertebrates

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Marine Invertebrates

Anemones, Jellyfish, Comb Jellies & allies (Cnidaria & Ctenophora)
Crabs, Prawns, Barnacles & allies (Crustacea)
Sea Shells, Sea Slugs, Octopuses & allies (Mollusca)
Sea Stars, Sea Urchins & allies (Echinodermata)
Other Marine Invertebrates

Featured sightings

Latest sightings

Ocypodidae (family) at Collaroy, NSW by Hejor1
Unidentified Crab at Zilzie, QLD by trevsci
Unidentified Crab at Zilzie, QLD by trevsci
Lunella undulata at Collaroy, NSW by Hejor1
Dicathais orbita at Collaroy, NSW by Hejor1
Austrocochlea porcata at Collaroy, NSW by Hejor1
Gastropoda at Collaroy, NSW by Hejor1
Tenguella marginalba at Collaroy, NSW by Hejor1
Cellana tramoserica at Collaroy, NSW by Hejor1
Haliotis rubra rubra at Collaroy, NSW by Hejor1
Trichomya hirsuta at Collaroy, NSW by Hejor1
Nodilittorina pyramidalis at Collaroy, NSW by Hejor1
Austrolittorina unifasciata at Collaroy, NSW by Hejor1
Nerita sp. at Collaroy, NSW by Hejor1
Austrocochlea sp. at Collaroy, NSW by Hejor1
Bembicium auratum at Collaroy, NSW by Hejor1
Tesseropora rosea at Collaroy, NSW by Hejor1
Saccostrea glomerata at Collaroy, NSW by Hejor1
GASTROPODA (class) at Collaroy, NSW by Hejor1
Aulactinia veratra at Collaroy, NSW by Hejor1
Heliocidaris erythrogramma at Collaroy, NSW by Hejor1
Ocypodidae (family) at Collaroy, NSW by Hejor1
Actinia tenebrosa at Collaroy, NSW by Hejor1
Sypharochiton pelliserpentis at Collaroy, NSW by Hejor1
Oulactis muscosa at Collaroy, NSW by Hejor1
Turbo (Ninella) torquatus at Collaroy, NSW by Hejor1
Turbo (Subninella) at Collaroy, NSW by Hejor1
Parvulastra exigua at Collaroy, NSW by Hejor1
Leptograpsus variegatus at Collaroy, NSW by Hejor1
Bedeva paivae at Collaroy, NSW by Hejor1
Ozius truncatus at Collaroy, NSW by Hejor1
Botrylloides perspicuus at Collaroy, NSW by Hejor1
Opalia (Dentiscala) ballinensis at Collaroy, NSW by Hejor1
Rostanga arbutus at Collaroy, NSW by Hejor1
Stylocheilus striatus at Collaroy, NSW by Hejor1
Jorunna pantherina at Collaroy, NSW by Hejor1
Gastropoda at Collaroy, NSW by Hejor1
Unidentified Jellyfish or Hydroid at Hobart, TAS by LyndalT
Janthina janthina (Violet Sea Snail) at Tuross Head, NSW by HelenCross
Catostylus mosaicus (Blue Blubber) at Batemans Bay, NSW by AlisonMilton
Sepia sp. (genus) at Warrnambool, VIC by AlisonMilton
Sepia sp. (genus) at Flinders, VIC by AlisonMilton
Unidentified Sea Star, Sea Urchin or Ally (Echinodermata) at Torquay, QLD by GG
Unidentified Sea Star, Sea Urchin or Ally (Echinodermata) at Torquay, QLD by GG
Unidentified Marine Invertebrate at Torquay, QLD by GG
Glaucus atlanticus at Durras North, NSW by JW
Unidentified Anemone, Coral, Sea Pen at Coles Bay, TAS by VanessaC
Octopus tetricus at Depot Beach, NSW by AlisonMilton
Parvulastra exigua at Depot Beach, NSW by AlisonMilton
Aplysia juliana at Depot Beach, NSW by AlisonMilton
Mytilus edulis at Boydtown, NSW by AlisonMilton
Pecten (Pecten) fumatus at Boydtown, NSW by AlisonMilton
Scylla serrata at Boydtown, NSW by AlisonMilton
Unidentified Crab at Huskisson, NSW by AlisonMilton
Unidentified Crab at Broulee, NSW by AlisonMilton
Unidentified Crab at Huskisson, NSW by AlisonMilton
Unidentified Marine Invertebrate at Merimbula, NSW by PeteSnapz
Sabellastarte australiensis at Benandarah, NSW by Harrisi
Unidentified Other Marine Invertebrate at Sunshine Bay, NSW by Harrisi
Bursatella leachii (Ragged Seahare) at Sunshine Bay, NSW by Harrisi
Unidentified Sea Shell, Sea Slug or Octopus (Mollusca) at Broulee, NSW by AlisonMilton
Unidentified Crab, Prawn, Barnacle (Crustacea) at Broulee, NSW by AlisonMilton
Sepia sp. (genus) (Cuttlefish) at Broulee, NSW by AlisonMilton
Physalia utriculus at Broulee, NSW by AlisonMilton
Unidentified Marine Invertebrate at Port Macquarie, NSW by AlisonMilton
Ocypode cordimana at Port Macquarie, NSW by AlisonMilton
Unidentified Lobster, Bug at Port Macquarie, NSW by AlisonMilton
Unidentified Barnacle at Yaroomba, QLD by trevorpreston
Oulactis muscosa at Yaroomba, QLD by trevorpreston
Unidentified Barnacle at Yaroomba, QLD by trevorpreston
Oulactis muscosa at Yaroomba, QLD by trevorpreston
Unidentified Sea Snail or Limpet (Gastropoda) at Redcliffe, QLD by trevorpreston
Physalia utriculus at Guerilla Bay, NSW by Hejor1
Sepia sp. (genus) (Cuttlefish) at Guerilla Bay, NSW by Hejor1
Janthina janthina (Violet Sea Snail) at Guerilla Bay, NSW by Hejor1
Actinia tenebrosa (Red Waratah Anemone) at Guerilla Bay, NSW by Hejor1
Aulactinia veratra (Anemone) at Guerilla Bay, NSW by Hejor1
Tesseropora rosea at Guerilla Bay, NSW by Hejor1
Parvulastra exigua (Rock pool seastar) at Guerilla Bay, NSW by Hejor1
Saccostrea glomerata (Sydney Rock Oyster) at Guerilla Bay, NSW by Hejor1
Haliotis rubra rubra (Blacklip Abalone) at Guerilla Bay, NSW by Hejor1
Austrolittorina unifasciata (Blue Australwink) at Guerilla Bay, NSW by Hejor1
Nerita melanotragus at Guerilla Bay, NSW by Hejor1
Cellana tramoserica (Commom Limpet) at Guerilla Bay, NSW by Hejor1
Lunella undulata (Green Turban Shell/Warrener) at Guerilla Bay, NSW by Hejor1
Sypharochiton pelliserpentis (Snakeskin Chiton) at Guerilla Bay, NSW by Hejor1
Bembicium nanum at Guerilla Bay, NSW by Hejor1
Leptograpsus variegatus (Purple Rock Crab) at Guerilla Bay, NSW by Hejor1
Lunella undulata (Green Turban Shell/Warrener) at Guerilla Bay, NSW by Hejor1
Ovalipes australiensis at Vincentia, NSW by Miranda
Unidentified Anemone, Jellyfish or Comb Jelly (Cnidaria, Ctenophora) at Vincentia, NSW by Miranda
Actinia tenebrosa at Vincentia, NSW by Miranda
Oulactis muscosa at Vincentia, NSW by Miranda
Aulactinia veratra at Vincentia, NSW by Miranda
Unidentified Anemone, Jellyfish or Comb Jelly (Cnidaria, Ctenophora) at Vincentia, NSW by Miranda
Unidentified Anemone, Jellyfish or Comb Jelly (Cnidaria, Ctenophora) at Vincentia, NSW by Miranda
Oulactis muscosa at Vincentia, NSW by Miranda
Unidentified Lobster, Bug at Royal National Park, NSW by NateKingsford
SERPULIDAE (family) (Tube Worm) at Malua Bay, NSW by Hejor1
Physalia utriculus at Malua Bay, NSW by Hejor1

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Discussion

Mike wrote:
6 Jan 2025
Thanks for the suggestion. I will have to adjust the location onto the beach.
Oulactis muscosa
Jennyncmg wrote:
6 Jan 2025
These feed on bluebottles and by-the-wind sailors.
Glaucus atlanticus
Jennyncmg wrote:
5 Jan 2025
I agree with the identification but the program would not let me verify
Hydatina physis
Seakukumber wrote:
4 Jan 2025
I saw 4 individual specimens of the Hydatina physis while snorkelling off the rocks at the north end of “The Farm” Killalea Regional Park, Shell Cove NSW.
Hydatina physis
Jennyncmg wrote:
3 Jan 2025
I chose O.tetricus because the undersides of its arms appear to be orange-red.
Octopus tetricus

Recent activity

Ocypodidae (family)

Lunella undulata

Dicathais orbita

Austrocochlea porcata

Gastropoda

Tenguella marginalba

Cellana tramoserica

Haliotis rubra rubra

Trichomya hirsuta

Nodilittorina pyramidalis

Species Richness Score (SRS)

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1,906,579 sightings of 21,350 species from 13,156 contributors
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