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Marine Invertebrates
Crabs, Prawns, Barnacles & allies (Crustacea)
Crabs (Decapoda, Brachyura)

Crab sightings

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Crabs (Decapoda, Brachyura)

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Unverified Crab at Broome, WA - 20 Jul 2025 by Mike

Unverified Crab

Unverified Crab at Broome, WA - 20 Jul 2025 by Mike

Unverified Crab

Unverified Crab at Broome, WA - 19 Jul 2025 by Mike

Unverified Crab

Unverified Crab at Broome, WA - 19 Jul 2025 by Mike

Unverified Crab

Unverified Crab at Broome, WA - 19 Jul 2025 by Mike

Unverified Crab

Unverified Crab at Broome, WA - 19 Jul 2025 by Mike

Unverified Crab

Unverified Crab at Undefined, WA - 13 Jul 2025 by Mike

Unverified Crab

Leptograpsus variegatus (Purple Rock Crab) at Green Cape, NSW - 21 Jun 2025 by Hejor1

Leptograpsus variegatus

Naxia sp. (genus) at Sloping Main, TAS - 7 Jun 2025 by VanessaC

Naxia sp. (genus)

Unverified Crab at Cape Tribulation, QLD - 3 Jun 2025 by mroseby

Unverified Crab

Unverified Crab at Thornton Beach, QLD - 3 Jun 2025 by mroseby

Unverified Crab

Unverified Crab at Diwan, QLD - 3 Jun 2025 by mroseby

Unverified Crab

Mictyris longicarpus (Soldier Crab) at Merimbula, NSW - 25 Apr 2025 by Clarel

Mictyris longicarpus

Leptograpsus variegatus (Purple Rock Crab) at Pretty Beach, NSW - 21 Apr 2025 by Clarel

Leptograpsus variegatus

Mictyris longicarpus at Surfside, NSW - 20 Apr 2025 by mroseby

Mictyris longicarpus

Heloecius cordiformis at Surfside, NSW - 20 Apr 2025 by mroseby

Heloecius cordiformis

Parasesarma erythodactyla (Red-handed shore crab) at Surfside, NSW - 20 Apr 2025 by mroseby

Parasesarma erythodactyla

Portunus pelagicus at Coffs Harbour, NSW - 11 Apr 2025 by LyndalT

Portunus pelagicus

Heloecius cordiformis at Bodalla, NSW - 9 Apr 2025 by MB

Heloecius cordiformis

Leptograpsus variegatus at Merimbula, NSW - 29 Mar 2025 by VanceLawrence

Leptograpsus variegatus

Ocypode cordimana at Sunshine Bay, NSW - 22 Mar 2025 by DavidDedenczuk

Ocypode cordimana

Mictyris longicarpus (Soldier Crab) at Moruya Heads, NSW - 13 Mar 2025 by jb2602

Mictyris longicarpus

Unverified Crab at Bangalee, NSW - 9 Mar 2025 by JimL

Unverified Crab

Scylla serrata at - suppressed by AliClaw

Scylla serrata

Unverified Crab at Saltwater River, TAS - 13 Feb 2025 by JimL

Unverified Crab

Unverified Crab at Port Arthur, TAS - 13 Feb 2025 by JimL

Unverified Crab

Ozius deplanatus at Currarong, NSW - 1 Feb 2025 by Bekconroy

Ozius deplanatus

Leptograpsus variegatus (Purple Rock Crab) at Broulee, NSW - 25 Jan 2025 by Hejor1

Leptograpsus variegatus

Ozius deplanatus (Ozius deplanatus) at Shellharbour, NSW - 22 Jan 2025 by SteveBorkowskis

Ozius deplanatus

Ozius truncatus at Collaroy, NSW - 18 Jan 2025 by Hejor1

Ozius truncatus

Leptograpsus variegatus at Collaroy, NSW - 18 Jan 2025 by Hejor1

Leptograpsus variegatus

Ocypodidae (family) at Collaroy, NSW - 18 Jan 2025 by Hejor1

Ocypodidae (family)

Leptograpsus variegatus (Purple Rock Crab) at Guerilla Bay, NSW - 22 Dec 2024 by Hejor1

Leptograpsus variegatus

Ovalipes australiensis at Vincentia, NSW - 21 Dec 2024 by Miranda

Ovalipes australiensis

Leptograpsus variegatus (Purple Rock Crab) at Malua Bay, NSW - 19 Dec 2024 by Hejor1

Leptograpsus variegatus

Leptograpsus variegatus at Lake Tabourie, NSW - 14 Dec 2024 by Medha

Leptograpsus variegatus

Leptograpsus variegatus at Lake Tabourie, NSW - 14 Dec 2024 by VanceLawrence

Leptograpsus variegatus

Leptograpsus variegatus at Green Cape, NSW - 7 Dec 2024 by Hejor1

Leptograpsus variegatus

Ocypode cordimana at Malua Bay, NSW - 1 Dec 2024 by trevorpreston

Ocypode cordimana

Unverified Crab at Zilzie, QLD - 17 Nov 2024 by trevsci

Unverified Crab

Unverified Crab at Zilzie, QLD - 17 Nov 2024 by trevsci

Unverified Crab

Ocypodidae (family) at Francois Peron National Park, WA - 6 Nov 2024 by HelenCross

Ocypodidae (family)

Ocypodidae (family) at Francois Peron National Park, WA - 6 Nov 2024 by HelenCross

Ocypodidae (family)

Unverified Crab at Port Fairy, VIC - 1 Nov 2024 by MB

Unverified Crab

Unverified Crab at Rosslyn, QLD - 14 Oct 2024 by NateKingsford

Unverified Crab

Leptograpsus variegatus at Narooma, NSW - 7 Oct 2024 by BethanyDunne

Leptograpsus variegatus

Leptograpsus variegatus (Purple Rock Crab) at Malua Bay, NSW - 1 Oct 2024 by Hejor1

Leptograpsus variegatus

Leptograpsus variegatus (Purple Rock Crab) at Benandarah, NSW - 30 Sep 2024 by Hejor1

Leptograpsus variegatus

Leptograpsus variegatus at Benandarah, NSW - 30 Sep 2024 by Hejor1

Leptograpsus variegatus

Leptograpsus variegatus (Purple Rock Crab) at Batemans Bay, NSW - 29 Sep 2024 by Hejor1

Leptograpsus variegatus

Unverified Crab at Coodanup, WA - 26 Sep 2024 by Trina

Unverified Crab

Unverified Crab at Moreton Island, QLD - 25 Sep 2024 by trevorpreston

Unverified Crab

Leptograpsus variegatus at Moruya, NSW - 12 Sep 2024 by LisaH

Leptograpsus variegatus

Ocypodidae (family) at Mon Repos, QLD - 24 Aug 2024 by lbradley

Ocypodidae (family)

Unverified Crab at Wellington Point, QLD - 20 Aug 2024 by Gaylesp8

Unverified Crab

Metopograpsus sp. (genus) (A Crab) at Airlie Beach, QLD - 19 Aug 2024 by lbradley

Metopograpsus sp. (genus)

Mictyris sp. (genus) at Urangan, QLD - 17 Aug 2024 by BlueBowerArt

Mictyris sp. (genus)

Heloecius cordiformis (Semaphore Crab) at Surfside, NSW - 2 Aug 2024 by HelenCross

Heloecius cordiformis

Mictyris longicarpus (Soldier Crab) at Batemans Bay, NSW - 2 Aug 2024 by HelenCross

Mictyris longicarpus

Unverified Crab at Cairns City, QLD - 29 Jul 2024 by Mike

Unverified Crab

Mictyris longicarpus at Elliott Heads, QLD - 5 Jul 2024 by Gaylesp8

Mictyris longicarpus

Leptograpsus variegatus at Coolangatta, QLD - 15 Jun 2024 by Hejor1

Leptograpsus variegatus

Mictyris sp. (genus) at Urangan, QLD - 11 May 2024 by Gaylesp8

Mictyris sp. (genus)

Unverified Crab at Brunswick Heads, NSW - 3 Apr 2024 by macmad

Unverified Crab

Heloecius cordiformis (Semaphore Crab) at Orient Point, NSW - 8 Mar 2024 by Christine

Heloecius cordiformis

Paragrapsus laevis at Jervis Bay Marine Park - 21 Jan 2024 by AniseStar

Paragrapsus laevis

Heloecius cordiformis (Semaphore Crab) at Jervis Bay Maritime Museum - 20 Jan 2024 by AniseStar

Heloecius cordiformis

Paragrapsus laevis at Wirreecoo Trail - 20 Jan 2024 by AniseStar

Paragrapsus laevis

Paragrapsus laevis at Jervis Bay Marine Park - 17 Jan 2024 by AniseStar

Paragrapsus laevis

Heloecius cordiformis (Semaphore Crab) at Nelligen, NSW - 17 Dec 2023 by Hejor1

Heloecius cordiformis

Leptograpsus variegatus (Purple Rock Crab) at Meroo National Park - 9 Dec 2023 by VanceLawrence

Leptograpsus variegatus

Unverified Crab at Wellington Point, QLD - 7 Dec 2023 by TimL

Unverified Crab

Mictyris longicarpus at Wellington Point, QLD - 7 Dec 2023 by TimL

Mictyris longicarpus

Unverified Crab at Lake Innes, NSW - 27 Nov 2023 by KorinneM

Unverified Crab

Unverified Crab at Cleveland, QLD - 25 Nov 2023 by TimL

Unverified Crab

Unverified Crab at Warana, QLD - 19 Nov 2023 by Harrisi

Unverified Crab

Plagusia chabrus (Red Bait Crab) at Mimosa Rocks National Park - 11 Nov 2023 by trevorpreston

Plagusia chabrus

Leptograpsus variegatus (Purple Rock Crab) at Mimosa Rocks National Park - 11 Nov 2023 by trevorpreston

Leptograpsus variegatus

Leptograpsus variegatus (Purple Rock Crab) at Four Winds Bioblitz Reference Sites - 2 Sep 2023 by JonSteinbeck

Leptograpsus variegatus

Mictyris longicarpus at Bushland Beach, QLD - 25 Aug 2023 by RobynHall

Mictyris longicarpus

Leptograpsus variegatus (Purple Rock Crab) at Bawley Point, NSW - 22 Aug 2023 by Hejor1

Leptograpsus variegatus

Mictyris longicarpus (Soldier Crab) at Batemans Bay, NSW - 27 Jun 2023 by HelenCross

Mictyris longicarpus

Plagusia chabrus (Red Bait Crab) at Lilli Pilli, NSW - 16 Jun 2023 by Hejor1

Plagusia chabrus

Mictyris longicarpus at Wellington Point, QLD - 20 Apr 2023 by TimL

Mictyris longicarpus

Unverified Crab at Wellington Point, QLD - 20 Apr 2023 by TimL

Unverified Crab

Ocypode cordimana (Smooth-Handed Ghost Crab) at Green Cape, NSW - 15 Apr 2023 by JimL

Ocypode cordimana

Mictyris longicarpus (Soldier Crab) at Tuross Head, NSW - 12 Feb 2023 by HelenCross

Mictyris longicarpus

Plagusia chabrus at Narrawallee, NSW - 4 Feb 2023 by trevorpreston

Plagusia chabrus

Plagusia chabrus at Narrawallee, NSW - 4 Feb 2023 by trevorpreston

Plagusia chabrus

Leptograpsus variegatus at Narrawallee, NSW - 4 Feb 2023 by trevorpreston

Leptograpsus variegatus

Ocypode cordimana (Smooth-Handed Ghost Crab) at Jervis Bay, JBT - 19 Jan 2023 by Hejor1

Ocypode cordimana

Ocypode cordimana (Smooth-Handed Ghost Crab) at Jervis Bay, JBT - 19 Jan 2023 by Hejor1

Ocypode cordimana

Plagusia chabrus at Booderee National Park - 19 Jan 2023 by Hejor1

Plagusia chabrus

Leptograpsus variegatus at Currarong, NSW - 18 Jan 2023 by Hejor1

Leptograpsus variegatus

Leptograpsus variegatus at Currarong, NSW - 18 Jan 2023 by Hejor1

Leptograpsus variegatus

Unverified Crab at Cape Tribulation, QLD - 18 Jan 2023 by Mavis

Unverified Crab

Ozius deplanatus (Ozius deplanatus) at Broulee, NSW - 6 Jan 2023 by MattFox

Ozius deplanatus

Leptograpsus variegatus (Purple Rock Crab) at Broulee, NSW - 29 Dec 2022 by Hejor1

Leptograpsus variegatus

Carcinus maenas at Broulee, NSW - 29 Dec 2022 by Hejor1

Carcinus maenas

Leptograpsus variegatus at Broulee, NSW - 29 Dec 2022 by Hejor1

Leptograpsus variegatus

Unverified Crab at Broome, WA - 20 Jul 2025 by Mike
Unverified Crab at Broome, WA - 20 Jul 2025 by Mike
Unverified Crab at Broome, WA - 19 Jul 2025 by Mike
Unverified Crab at Broome, WA - 19 Jul 2025 by Mike
Unverified Crab at Broome, WA - 19 Jul 2025 by Mike
Unverified Crab at Broome, WA - 19 Jul 2025 by Mike
Unverified Crab at Undefined, WA - 13 Jul 2025 by Mike
Leptograpsus variegatus (Purple Rock Crab) at Green Cape, NSW - 21 Jun 2025 by Hejor1
Naxia sp. (genus) at Sloping Main, TAS - 7 Jun 2025 by VanessaC
Unverified Crab at Cape Tribulation, QLD - 3 Jun 2025 by mroseby
Unverified Crab at Thornton Beach, QLD - 3 Jun 2025 by mroseby
Unverified Crab at Diwan, QLD - 3 Jun 2025 by mroseby
Mictyris longicarpus (Soldier Crab) at Merimbula, NSW - 25 Apr 2025 by Clarel
Leptograpsus variegatus (Purple Rock Crab) at Pretty Beach, NSW - 21 Apr 2025 by Clarel
Mictyris longicarpus at Surfside, NSW - 20 Apr 2025 by mroseby
Heloecius cordiformis at Surfside, NSW - 20 Apr 2025 by mroseby
Parasesarma erythodactyla (Red-handed shore crab) at Surfside, NSW - 20 Apr 2025 by mroseby
Portunus pelagicus at Coffs Harbour, NSW - 11 Apr 2025 by LyndalT
Heloecius cordiformis at Bodalla, NSW - 9 Apr 2025 by MB
Leptograpsus variegatus at Merimbula, NSW - 29 Mar 2025 by VanceLawrence
Ocypode cordimana at Sunshine Bay, NSW - 22 Mar 2025 by DavidDedenczuk
Mictyris longicarpus (Soldier Crab) at Moruya Heads, NSW - 13 Mar 2025 by jb2602
Unverified Crab at Bangalee, NSW - 9 Mar 2025 by JimL
Scylla serrata by AliClaw
Unverified Crab at Saltwater River, TAS - 13 Feb 2025 by JimL
Unverified Crab at Port Arthur, TAS - 13 Feb 2025 by JimL
Ozius deplanatus at Currarong, NSW - 1 Feb 2025 by Bekconroy
Leptograpsus variegatus (Purple Rock Crab) at Broulee, NSW - 25 Jan 2025 by Hejor1
Ozius deplanatus (Ozius deplanatus) at Shellharbour, NSW - 22 Jan 2025 by SteveBorkowskis
Ozius truncatus at Collaroy, NSW - 18 Jan 2025 by Hejor1
Leptograpsus variegatus at Collaroy, NSW - 18 Jan 2025 by Hejor1
Ocypodidae (family) at Collaroy, NSW - 18 Jan 2025 by Hejor1
Leptograpsus variegatus (Purple Rock Crab) at Guerilla Bay, NSW - 22 Dec 2024 by Hejor1
Ovalipes australiensis at Vincentia, NSW - 21 Dec 2024 by Miranda
Leptograpsus variegatus (Purple Rock Crab) at Malua Bay, NSW - 19 Dec 2024 by Hejor1
Leptograpsus variegatus at Lake Tabourie, NSW - 14 Dec 2024 by Medha
Leptograpsus variegatus at Lake Tabourie, NSW - 14 Dec 2024 by VanceLawrence
Leptograpsus variegatus at Green Cape, NSW - 7 Dec 2024 by Hejor1
Ocypode cordimana at Malua Bay, NSW - 1 Dec 2024 by trevorpreston
Unverified Crab at Zilzie, QLD - 17 Nov 2024 by trevsci
Unverified Crab at Zilzie, QLD - 17 Nov 2024 by trevsci
Ocypodidae (family) at Francois Peron National Park, WA - 6 Nov 2024 by HelenCross
Ocypodidae (family) at Francois Peron National Park, WA - 6 Nov 2024 by HelenCross
Unverified Crab at Port Fairy, VIC - 1 Nov 2024 by MB
Unverified Crab at Rosslyn, QLD - 14 Oct 2024 by NateKingsford
Leptograpsus variegatus at Narooma, NSW - 7 Oct 2024 by BethanyDunne
Leptograpsus variegatus (Purple Rock Crab) at Malua Bay, NSW - 1 Oct 2024 by Hejor1
Leptograpsus variegatus (Purple Rock Crab) at Benandarah, NSW - 30 Sep 2024 by Hejor1
Leptograpsus variegatus at Benandarah, NSW - 30 Sep 2024 by Hejor1
Leptograpsus variegatus (Purple Rock Crab) at Batemans Bay, NSW - 29 Sep 2024 by Hejor1
Unverified Crab at Coodanup, WA - 26 Sep 2024 by Trina
Unverified Crab at Moreton Island, QLD - 25 Sep 2024 by trevorpreston
Leptograpsus variegatus at Moruya, NSW - 12 Sep 2024 by LisaH
Ocypodidae (family) at Mon Repos, QLD - 24 Aug 2024 by lbradley
Unverified Crab at Wellington Point, QLD - 20 Aug 2024 by Gaylesp8
Metopograpsus sp. (genus) (A Crab) at Airlie Beach, QLD - 19 Aug 2024 by lbradley
Mictyris sp. (genus) at Urangan, QLD - 17 Aug 2024 by BlueBowerArt
Heloecius cordiformis (Semaphore Crab) at Surfside, NSW - 2 Aug 2024 by HelenCross
Mictyris longicarpus (Soldier Crab) at Batemans Bay, NSW - 2 Aug 2024 by HelenCross
Unverified Crab at Cairns City, QLD - 29 Jul 2024 by Mike
Mictyris longicarpus at Elliott Heads, QLD - 5 Jul 2024 by Gaylesp8
Leptograpsus variegatus at Coolangatta, QLD - 15 Jun 2024 by Hejor1
Mictyris sp. (genus) at Urangan, QLD - 11 May 2024 by Gaylesp8
Unverified Crab at Brunswick Heads, NSW - 3 Apr 2024 by macmad
Heloecius cordiformis (Semaphore Crab) at Orient Point, NSW - 8 Mar 2024 by Christine
Paragrapsus laevis at Jervis Bay Marine Park - 21 Jan 2024 by AniseStar
Heloecius cordiformis (Semaphore Crab) at Jervis Bay Maritime Museum - 20 Jan 2024 by AniseStar
Paragrapsus laevis at Wirreecoo Trail - 20 Jan 2024 by AniseStar
Paragrapsus laevis at Jervis Bay Marine Park - 17 Jan 2024 by AniseStar
Heloecius cordiformis (Semaphore Crab) at Nelligen, NSW - 17 Dec 2023 by Hejor1
Leptograpsus variegatus (Purple Rock Crab) at Meroo National Park - 9 Dec 2023 by VanceLawrence
Unverified Crab at Wellington Point, QLD - 7 Dec 2023 by TimL
Mictyris longicarpus at Wellington Point, QLD - 7 Dec 2023 by TimL
Unverified Crab at Lake Innes, NSW - 27 Nov 2023 by KorinneM
Unverified Crab at Cleveland, QLD - 25 Nov 2023 by TimL
Unverified Crab at Warana, QLD - 19 Nov 2023 by Harrisi
Plagusia chabrus (Red Bait Crab) at Mimosa Rocks National Park - 11 Nov 2023 by trevorpreston
Leptograpsus variegatus (Purple Rock Crab) at Mimosa Rocks National Park - 11 Nov 2023 by trevorpreston
Leptograpsus variegatus (Purple Rock Crab) at Four Winds Bioblitz Reference Sites - 2 Sep 2023 by JonSteinbeck
Mictyris longicarpus at Bushland Beach, QLD - 25 Aug 2023 by RobynHall
Leptograpsus variegatus (Purple Rock Crab) at Bawley Point, NSW - 22 Aug 2023 by Hejor1
Mictyris longicarpus (Soldier Crab) at Batemans Bay, NSW - 27 Jun 2023 by HelenCross
Plagusia chabrus (Red Bait Crab) at Lilli Pilli, NSW - 16 Jun 2023 by Hejor1
Mictyris longicarpus at Wellington Point, QLD - 20 Apr 2023 by TimL
Unverified Crab at Wellington Point, QLD - 20 Apr 2023 by TimL
Ocypode cordimana (Smooth-Handed Ghost Crab) at Green Cape, NSW - 15 Apr 2023 by JimL
Mictyris longicarpus (Soldier Crab) at Tuross Head, NSW - 12 Feb 2023 by HelenCross
Plagusia chabrus at Narrawallee, NSW - 4 Feb 2023 by trevorpreston
Plagusia chabrus at Narrawallee, NSW - 4 Feb 2023 by trevorpreston
Leptograpsus variegatus at Narrawallee, NSW - 4 Feb 2023 by trevorpreston
Ocypode cordimana (Smooth-Handed Ghost Crab) at Jervis Bay, JBT - 19 Jan 2023 by Hejor1
Ocypode cordimana (Smooth-Handed Ghost Crab) at Jervis Bay, JBT - 19 Jan 2023 by Hejor1
Plagusia chabrus at Booderee National Park - 19 Jan 2023 by Hejor1
Leptograpsus variegatus at Currarong, NSW - 18 Jan 2023 by Hejor1
Leptograpsus variegatus at Currarong, NSW - 18 Jan 2023 by Hejor1
Unverified Crab at Cape Tribulation, QLD - 18 Jan 2023 by Mavis
Ozius deplanatus (Ozius deplanatus) at Broulee, NSW - 6 Jan 2023 by MattFox
Leptograpsus variegatus (Purple Rock Crab) at Broulee, NSW - 29 Dec 2022 by Hejor1
Carcinus maenas at Broulee, NSW - 29 Dec 2022 by Hejor1
Leptograpsus variegatus at Broulee, NSW - 29 Dec 2022 by Hejor1

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834,128 sightings of 22,989 species from 14,478 members
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