Showing posts with label Anthopleura artemisia. Show all posts
Showing posts with label Anthopleura artemisia. Show all posts

Thursday, April 27, 2023

Do they get overtime pay?

 Anemones at low tide. When the water recedes, they shrink into themselves, becoming greenish circles in the sand or soft lumps on the side of a rock. But between the rocks, where the sand dips and a few inches of water still cover them, they stay open and feeding. Do they grow bigger in these spots, or reproduce more enthusiastically? I wonder.

Pink-tipped green anemone, Anthopleura elegantissima, very pale, with bubbles.

Burrowing anemone, Anthopleura artemisia. With red feathery seaweed, with bleached tips.

This burrowing anemone has been eating mussels.

A small family grouping. "Colonies of clones actually war against each other." (Marine Life PNW)

Next: colonies on dry rock, waiting out the low tide.

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Unas anémonas, vistas durante la marea baja. Normalmente, cuando el agua desaparece, las anémonas se encogen, haciéndose apenas unos circulitos entre la arena, o cojines suaves en los lados protegidos de las rocas. Pero entre las rocas, en los espacios donde las corrientes hacen pocitos en la arena, y el agua sigue cubriéndolas, se quedan abiertas, comiendo. ¿Será que aquí crecen más, o se reproducen más rapidamente?

Fotos: 
  1. Una anémona verde con las puntas color de rosa; ésta es muy pálida. Anthopleura elegantissima.
  2. Una anémona verde, Anthopleura artemisia. Con un alga marina roja, pero con las ramitas blanqueadas por el sol.
  3. Otra anémona verde; este ha estado comiendo mejillones.
  4. Un grupo familiar. "Las colonias compuestas de clones hasta llegan a hacer guerra contra otras." (De la enciclopedia Marine Life PNW)
Mañana; otras colonias situadas en roca donde la marea baja las deja en seco.


Thursday, August 18, 2022

Underwater flowers

And anemones. Like yesterday's starfish, brightly coloured, some underwater, some out in the open, waiting for the tide to come back in.

The white lines on the tentacles and the location, half-buried in sand, mark these as Burrowing Anemones, Anthopleura artemisia. The one in the shade may be as brilliant as the other, when the sunlight reaches it.

Dark green, neon green. Again, it depends on the light. When the water recedes, they draw the tentacles in, sometimes hiding completely under the sand.

Very few markings on this one, among rocks. The same species, or another?

A bright green one, swept by the waves.

Pink-tipped green anemones, Anthopleura elegantissima, on the side of a long line of rocks. Thousands of them, clones all crammed together.

A closer look. The columns are green, covered with "goosebumps", and the tentacles have pink tips, here retracted until the water comes back.

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Y unas anémonas de mar. Como las estrellas de mar que subí ayer, algunas están bajo el agua, otras en las rocas expuestas al aire y al sol, esperando a que regrese la marea.

Fotos:
  1. Las lineas blancas en los tentáculos y el sitio donde se encuentran las marcan como la anémona excavadora, Anthopleura artemisia. La que se halla en sombra puede ser tan brillante como la otra, una vez que le lleguen los rayos del sol.
  2. Dos tonos de verde. Depende de si la luz le ilumine. Cuando la marea baja dejándolas fuera del agua, retraen los tentáculos y a veces desaparecen completamente bajo la arena.
  3. No se ven lineas blancas en esta, situada entre rocas. ¿Es una de la misma especie, u otra?
  4. Otra anémona muy verde, bailando bajo las olas.
  5. Estas son las anémonas verdes con puntos color de rosa, Anthopleura elegantissima. Cubren casi por completo un lado de una hilera larga de piedras. Miles y miles de anémonas, todas clones.
  6. Acercándonos un poco. Las columnas son verdes y llevan "piel de gallina", y los tentáculos tienen las puntas color de rosa. Aquí los han retraído hasta que vuelva el agua.



Saturday, March 26, 2022

Shy sand dwellers

 When I arrived at Stories Beach, the tide was on its way down. I followed it as it went, walking along the edge of the water, peering under and behind rocks, staring into tide pools to watch tiny fish, counting whelks and starfish...

A girl asked me about the circles she saw in the sand; squishy circles, just sand, but it sunk away from her finger when she touched them. Anemones. There are two common species on this shore that do this, hiding away when the water drops.

Pink-tipped green anemone, Anthopleura elegantissima.

I often see these, crowds of them, in sandstone, where they dig themselves a hole. At low tide, they look like pock marks on the stone; as soon as the water covers them again, they spread out their pink tentacles.

In the photo there are also a couple of hairy hermit crabs in periwinkle shells. And a limpet: there are always limpets.

Burrowing anemone, Anthopleura artemisia.

The other anemone that retreats under the sand on this beach is the burrowing anemone. This one lives in sand, especially near rocks. Sometimes they hide themselves completely; sometimes they still wave the tentacles about as long as they're wet. It depends. On their mood, maybe?

The burrowing anemones come in a variety of colours. There are at least 7 in this photo.

Also in the photo, look for the tube worm's tube with a drop of water on the tip. The other pinkish projections from the sand could be algae; I should have dug one up to see.

A small burrowing anemone, in a vivid lime-green.

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Cuando llegué a la playa, la marea ya bajaba. La seguí, caminando al borde del agua mientras se alejaba, mirando debajo y alrededor de las rocas, deteniéndome para observar las peces en las pozas de marea, contando caracoles marinos y estrellas de mar...

Una muchacha me preguntó acerca de los pocitos de arena que encontraba; círculos de arena que respondían cuando los tocaba, retrayéndose aun más en la arena. Anémonas, le dije. Hay dos especies de anémona en esta playa que se esconden cuando el agua huye.

Primera foto: Una anémona agregante, Anthopleura elegantissima.

Veo estas frecuentemente; multitudes, colonias enteras. Se excavan hoyos en la arenisca, una piedra muy suave. Cuando la marea está baja, estos hoyos parecen cráteres miniaturas llenas de arena; cuando regresa el agua, vuelven a extender sus tentáculos color de rosa.

En esta foto también hay dos cangrejos ermitaños "peludos", Pagurus hirsutiusculus. Y una lapa. Siempre hay lapas.

Fotos 2 a 4: Anémonas excavadoras, Anthopleura artemisia.

La segunda anémona que se esconde bajo la arena es la anémona excavadora. Esta vive en la arena, generalmente cerca de las rocas. A veces se esconden completamente cuando la marea baja; a veces mantienen los tentáculos al descubierto, mientras todavía permanecen húmedos. Todo depende. De su idea al momento, parece.

Vienen en una variedad de colores, desde un gris algo roseáceo hasta verde o anaranjado. La anémona chica en la última foto es lo más verde que he visto.

En la tercera foto también se ve un gusano de tubo, alzado sobre la arena, con una gota de agua encima. Hay por lo menos 7 anémonas en la foto. Las otras cosas que sobresalen de la arena pueden ser algas; no se me ocurrió desenterrar una para ver si así era.

Wednesday, September 08, 2021

Green and pink anemones

I managed a long walk at the low tide level yesterday, the first since my knee injury. Lots to show for it!

For now, here's a green anemone.

Probably the burrowing anemone, Anthopleura artemisia. Surrounded by pink-tipped green anemones, Anthopleura elegantissima. Stories beach, low tide line.

Next: hidden starfish.

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Pude salir ayer a la playa con la marea baja, la primera vez desde que me lastimé la rodilla. ¡Una muy buena visita; encontré mucho de interés!

Por ahora, una anémona verde, Anthopleura artemisia, con algunas anémonas de punta rosa, Anthopleura elegantissima. El próximo post: estrellas de mar escondidas.


Tuesday, December 04, 2012

Valiant Valentine

I rescued a badly wounded anemone on the beach in Campbell River this August. (You may remember; the first post is here: and the second, once I'd established it at home.)

It was in poor shape; half cut through, with a quarter of its tentacles gone, and the mouth demolished. Still, it was alive and responding, and it handled the trip home ok. It settled down on the floor of the aquarium and set about healing. Very slowly. At first, s/he* didn't seem to be eating; after all, with the mouth torn up, how could s/he? I mashed crab pellets in water and fed hir* the paste every couple of days. Some of it washed away, but I could see movement in the mouth area; an attempt at swallowing at least.

And the tentacles slowly grew back, the mouth gradually opened up.

S/he's healed now, and actively feeding. Tonight, I watched hir grab a piece of fish that floated by, and pull it in with one tentacle. The mouth gaped open; the fish disappeared.

"Val"**, as I'm calling hir, is getting fat.

Burrowing anemone feeding. The tentacles curved inward just brought in another fish flake.

When I found hir on the beach, s/he was a blob of flesh about 2 cm. across the widest part, including column and disc and tentacles all mushed together. I measured hir tonight. The portion of the column above the sand is about 2 cm. tall, and wider than it is tall. When s/he's feeding, it swells up even more; the 2 cm. was after it shrunk away from my ruler. And there's another centimetre of sand underneath before it reaches the oyster shell where it is anchored.

The tentacles average another 1 1/2 cm., and opened up, they measure 4 cm. across, but can stretch even more to grab an interesting bit of food.

There's still a bit of white scar tissue on one side of the mouth, and the new tentacles on the left are shorter than the others. But they're catching up quickly.

I wonder how big s/he will get? A description from the University of Oregon gives a mature size of 2 1/2 cm. across the crown, about 2 times the length of the tentacles, and a column height of up to 6 cm. So now s/he's about full width, but can grow taller if s/he's happy in my tank.


* Hir and s/he: gender-neutral pronouns. (See Wikipedia.) Because I don't know whether s/he's male or female.

**The name comes from Valentine, for the heart marks on the tentacles, and also for Valiant, which s/he certainly is!

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