September 21, 2025 at 12:12 AM
From a little farther north - near Jenner and Fort Ross. Yes, I’m also seeing a greater number of sea stars PLUS the result or their voracious appetites, the rebound of the kelp beds 🐟 🪸 🌊 🦈 #marinelife
December 6, 2025 at 8:19 PM
Plenty of *Pisaster* in the Salish Sea 🌊⭐️ #SeastarSaturday #MarineLife 🦑
August 15, 2026 at 9:32 PM
Plenty of *Pisaster* in the Salish Sea 🌊⭐️ #SeastarSaturday #MarineLife 🦑
A brisingid sea star, poss. Hymenodiscus from East Necker Seamount in the North Pacific, #okeanos during #CAPSTONE expedition! #seastarSaturday
March 7, 2026 at 4:52 PM
A brisingid sea star, poss. Hymenodiscus from East Necker Seamount in the North Pacific, #okeanos during #CAPSTONE expedition! #seastarSaturday
Is #SeastarSaturday a thing? 🌊⭐️ After losing so many of these important predators along the west coast of North America a decade ago, seeing their return to our rocky shores always makes me happy. 🤩 #MarineLife #Invertebrate 🦑
December 6, 2025 at 6:52 PM
Is #SeastarSaturday a thing? 🌊⭐️ After losing so many of these important predators along the west coast of North America a decade ago, seeing their return to our rocky shores always makes me happy. 🤩 #MarineLife #Invertebrate 🦑
Hymenaster! Slime stars are always such a spectacle! #okeanos at about 1700 m depth Kahalewai central Pacific #seastarSaturday Surface of this animal is nearly gelatinous and spews mucus as a defense!
March 7, 2026 at 5:02 PM
Hymenaster! Slime stars are always such a spectacle! #okeanos at about 1700 m depth Kahalewai central Pacific #seastarSaturday Surface of this animal is nearly gelatinous and spews mucus as a defense!
November 14, 2024 at 7:13 AM
Brisingid, poss. Brisingenes with parasites along its many arms! East Necker Seamount, North Pacific #okeanos #seastarSaturday
March 7, 2026 at 4:54 PM
Brisingid, poss. Brisingenes with parasites along its many arms! East Necker Seamount, North Pacific #okeanos #seastarSaturday
You ever wonder what the genus "Pisaster" means translated out of Latin? The name is latin for "pisium" or PEA, alluding to the bean-like spines! Yes. it means "Pea Star"! #sonowyouknow #seastarsaturday #etymology
August 1, 2026 at 3:06 PM
You ever wonder what the genus "Pisaster" means translated out of Latin? The name is latin for "pisium" or PEA, alluding to the bean-like spines! Yes. it means "Pea Star"! #sonowyouknow #seastarsaturday #etymology
Abstract shots of Tosia magnifica-a goniasterid sea star from temperate Australia, showing off those smooth convex plates on its body surface! #echinoday #seastarSaturday #starfishSaturday
December 13, 2025 at 4:05 PM
Abstract shots of Tosia magnifica-a goniasterid sea star from temperate Australia, showing off those smooth convex plates on its body surface! #echinoday #seastarSaturday #starfishSaturday
The coral predator Hippasteria having a quiet moment with its lil yellow scale worm friend! It turns out these are quite common-but not observed on trawl specimens. #okeanos Te Kawhiti in the Central Pacific #seastarSaturday
March 7, 2026 at 4:57 PM
The coral predator Hippasteria having a quiet moment with its lil yellow scale worm friend! It turns out these are quite common-but not observed on trawl specimens. #okeanos Te Kawhiti in the Central Pacific #seastarSaturday
ha ha! Labidiaster radiosus, the patagonian sister to the Antarctic "wolf-trap star" Labidiaster annulatus which catches krill with its arms/pedicellariae. L. radiosus is more of a bottom predator-but much remains poorly understood.. #seastarSaturday www.inaturalist.org/observations...
Fragile Sticky Ray Star (Labidiaster radiosus)
Fragile Sticky Ray Star from Punta Arenas, Magallanes y la Antártica Chilena, Chile on January 19, 2026 at 07:42 PM by Alexis Bunster
www.inaturalist.org
May 2, 2026 at 3:37 PM
ha ha! Labidiaster radiosus, the patagonian sister to the Antarctic "wolf-trap star" Labidiaster annulatus which catches krill with its arms/pedicellariae. L. radiosus is more of a bottom predator-but much remains poorly understood.. #seastarSaturday www.inaturalist.org/observations...
OOOOHHH! Look at all the baby comb jellies! They live on these Echinaster but never seen so many small ones! attn @beziostudio.bsky.social @agcollins.bsky.social #seastarSaturday www.inaturalist.org/observations...
Luzon Sea Star (Echinaster luzonicus)
Luzon Sea Star from Baturinggit, Kubu, Karangasem Regency, Bali, Indonesia on November 2, 2025 at 10:30 AM by uwkwaj. Infested with small flatworms
www.inaturalist.org
May 2, 2026 at 3:44 PM
OOOOHHH! Look at all the baby comb jellies! They live on these Echinaster but never seen so many small ones! attn @beziostudio.bsky.social @agcollins.bsky.social #seastarSaturday www.inaturalist.org/observations...
From a visit to Melbourne, Australia in 2016! A lovely under shot of the 11 armed star Coscinasterias muricata showing off all those lovely asteriid tube feet! #echinoday #starfishSaturday #seastarSaturday
December 13, 2025 at 3:55 PM
From a visit to Melbourne, Australia in 2016! A lovely under shot of the 11 armed star Coscinasterias muricata showing off all those lovely asteriid tube feet! #echinoday #starfishSaturday #seastarSaturday
*laugh* WTF?? Pentaceraster on the head of this TURTLE?? #seastarSaturday www.inaturalist.org/observations...
Panamic Cushion Star (Pentaceraster cumingi)
Panamic Cushion Star from Bahía de Loreto, Loreto, MX-BS, MX on December 11, 2025 at 10:48 AM by Ginni Callahan
www.inaturalist.org
May 2, 2026 at 3:41 PM
*laugh* WTF?? Pentaceraster on the head of this TURTLE?? #seastarSaturday www.inaturalist.org/observations...
A large brisingid hanging out with some feather stars! All these animals are filter/suspension feeders and all take advantage of the same water current to feed. Some on small particulates and some are predators on crustaaceans #okeanos central Pacific TeKawhiti #seastarSaturday
March 7, 2026 at 4:59 PM
A large brisingid hanging out with some feather stars! All these animals are filter/suspension feeders and all take advantage of the same water current to feed. Some on small particulates and some are predators on crustaaceans #okeanos central Pacific TeKawhiti #seastarSaturday
The dreaded Asterias amurensis, a sea star introduced to the temperate coast of Australia back in the 80s-90s fr. the North Pacific It has undergone insane population explosions and done significant damage to shellfish and local ecology #echinoday #seastarSaturday #starfishSaturday
December 13, 2025 at 3:59 PM
The dreaded Asterias amurensis, a sea star introduced to the temperate coast of Australia back in the 80s-90s fr. the North Pacific It has undergone insane population explosions and done significant damage to shellfish and local ecology #echinoday #seastarSaturday #starfishSaturday
Whoa. Striking COLORS! Oreaster reticulatus from Martinique! Small ones are green. This one is changing from small to adult with the green phasing out with red spines! #seastarSaturday www.inaturalist.org/observations...
Red Cushion Sea Star (Oreaster reticulatus)
Red Cushion Sea Star from Schœlcher, MQ-FF, MQ on February 5, 2026 at 11:29 AM by Matteo Bellucci. juv
www.inaturalist.org
May 2, 2026 at 3:30 PM
Whoa. Striking COLORS! Oreaster reticulatus from Martinique! Small ones are green. This one is changing from small to adult with the green phasing out with red spines! #seastarSaturday www.inaturalist.org/observations...
Some good chonky stars pans one zippy lanky boi for #SeastarSaturday #StarfishSaturday 🦑⭐️
May 17, 2025 at 10:31 PM
Some good chonky stars pans one zippy lanky boi for #SeastarSaturday #StarfishSaturday 🦑⭐️
A cool South African Astropecten with a cool purple stripe but also regenerating arm tips! #seastarsaturday www.inaturalist.org/observations...
Sand Starfish (Subspecies Astropecten irregularis pontoporeus)
Sand Starfish from Long Beach, Simon's Town, South Africa on April 24, 2026 at 06:57 PM by Reece S
www.inaturalist.org
May 2, 2026 at 3:22 PM
A cool South African Astropecten with a cool purple stripe but also regenerating arm tips! #seastarsaturday www.inaturalist.org/observations...
SPAWN O TRONIC time! Here's a Blue Linckia on its tippy toes in gamete-release position! #seastarSaturday www.inaturalist.org/observations...
Blue Linckia (Linckia laevigata)
Blue Linckia from Central Visayas, PH on July 21, 2024 at 04:10 PM by Abraham Yuen, Jill Chen. Spawning posture?
www.inaturalist.org
May 2, 2026 at 3:32 PM
SPAWN O TRONIC time! Here's a Blue Linckia on its tippy toes in gamete-release position! #seastarSaturday www.inaturalist.org/observations...
PAPULAE! I am often asked about the "fuzz" seen on sea stars that are fat and happy. When comfortable they extend their "gills" into the water in order to "breathe" Here we see the many pores of Dermasterias, a leather star #seastarSaturday www.inaturalist.org/observations...
Leather Star (Dermasterias imbricata)
Leather Star from Oak Bay, BC, Canada on January 30, 2026 at 08:58 PM by Charles Van Arsdall. is this how they normally look or is this a disease?
www.inaturalist.org
May 2, 2026 at 3:34 PM
PAPULAE! I am often asked about the "fuzz" seen on sea stars that are fat and happy. When comfortable they extend their "gills" into the water in order to "breathe" Here we see the many pores of Dermasterias, a leather star #seastarSaturday www.inaturalist.org/observations...
OH NEAT! A Leather star attacking a brachiopod! British Columbia Sea stars attacking and causing brachiopod extinction was a brief topic of contention in the 90s! #seastarsaturday www.inaturalist.org/observations...
Leather Star (Dermasterias imbricata)
Leather Star from Skaikos Point, Sechelt Inlet, BC, Canada on November 15, 2019 at 02:12 PM by Neil McDaniel. Attacking a brachiopod, Terebratalia transversa.
www.inaturalist.org
May 2, 2026 at 3:24 PM
OH NEAT! A Leather star attacking a brachiopod! British Columbia Sea stars attacking and causing brachiopod extinction was a brief topic of contention in the 90s! #seastarsaturday www.inaturalist.org/observations...
Pycnopodia doing its thing! NOM NOM but the cuke escaped! #seastarSaturday www.inaturalist.org/observations...
Sunflower Sea Star (Pycnopodia helianthoides)
Sunflower Sea Star from Piper Point, Sechelt Inlet, BC, Canada on November 8, 2007 at 01:51 PM by Neil McDaniel. This Pycnopodia attacked an Apostichopus californicus. The cucumber escaped easily usi...
www.inaturalist.org
May 2, 2026 at 3:45 PM
Pycnopodia doing its thing! NOM NOM but the cuke escaped! #seastarSaturday www.inaturalist.org/observations...
Mediaster attacking? this green urchin! huh. never seen them attack living urchins. Neil speculates the urchin is damaged. possibly. #seastarSaturday www.inaturalist.org/observations...
Vermilion Star (Mediaster aequalis)
Vermilion Star from Sechelt Inlet, BC, Canada on May 7, 2020 at 12:56 PM by Neil McDaniel. Vermilion Stars usually don't attack living Green Urchins, so it may be scavenging an urchin that...
www.inaturalist.org
May 2, 2026 at 3:29 PM
Mediaster attacking? this green urchin! huh. never seen them attack living urchins. Neil speculates the urchin is damaged. possibly. #seastarSaturday www.inaturalist.org/observations...