Miles de ‘peces pene’ aparecen en una playa de Estados Unidos

Estas lombrices de mar normalmente se mueven entre la arena, pero las fuertes tormentas de los últimos días las han hecho aflorar.

Las fortísimas tormentas registradas los últimos días en el norte de California han dado lugar a un extraño fenómeno, cuyas imágenes han dado la vuelta al mundo: miles de animales casi desconocidos inundando la playa de Drakes. Lo curioso del asunto es la forma del animal en cuestión. Un simple vistazo basta para entender por qué al urechis caupo se le conoce comúnmente como pez pene.

Esta vez ha sucedido a unos 80 kilómetros al norte de San Francisco, pero el fenómeno de la proliferación de peces pene en las playas tras una fuerte tormenta no es nuevo en la costa californiana, según informa Bay Nature.

View this post on Instagram

SHOOK 😳 Thousands of these marine worms—called fat innkeeper worms, or “penis fish”—were found on Drake’s Beach last week! These phallic organisms are quite common along the West coast of North America, but they spend their whole lives in U-shaped burrows under the sand, so few beachgoers are aware of their existence. ⛈🌊 A recent storm in Northern California brought strong waves that washed away several feet of sand from the intertidal zone, leaving all these fat innkeeper worms exposed on the surface. 🏖 Next time you go to the beach, just think about the hundreds of 10-inch, pink sausages wiggling around just a few feet under the sand. 🙃 . . Get the full story in our new #AsktheNaturalist with @california_natural_history via link in bio! (📸: Beach photo courtesy David Ford; Worm photo by Kate Montana via iNaturalist)

A post shared by Bay Nature Magazine (@baynaturemagazine) on

Estos curiosos gusanos miden alrededor de 25 centímetros y normalmente viven bajo tierra, donde la arena los protege de su principal depredador: las gaviotas. Se fabrican una especie de cuevas en forma de U que terminan en algo así como una chimenea hacia el exterior. El propio pez pene se alimenta de plancton filtrando el agua que bombea a través de su cuerpo.

View this post on Instagram

The Korean name for this curious creature is gaebul, which translates as “dog dick.” Here in the States, it’s known as the fat innkeeper worm or the penis fish. Its scientific binomial is Urechis caupo, or “viper tail tradesman.” Whatever you call the animal, you can find them in abundance at Bodega Bay, where they build burrows in the tidal mud flats. On Saturday afternoon, our small, but enthusiastic clamming/crabbing crew thrust shovels and shoulder-deep arms into that mud in pursuit of Pacific gaper clams (Tresus nuttallii), but we also pulled up at least twenty of these red rockets. We returned them to their subterranean homes – excepting those that were snatched by eager herring gulls. I learned later that the gulls were the smarter hunters; fat innkeepers are edible, and are even considered a delicacy in Korea. Still, even though we missed out on a prime opportunity to dine on dog dick, we had a successful, fun outing, encountering a number of curious species, some of which now reside my belly. ⊙ What you’re looking at here: • Fat innkeeper worm (Urechis caupo) • A ring of prominent setae on the butt end of the fat innkeeper worm (Urechis caupo) • Bay ghost shrimp (Neotrypaea californiensis) • Lewis’s moon snail (Euspira lewisii) • Bucket filled w/ Pacific gaper clams or “horsenecks” (Tresus nuttallii), white macoma or “sand clams” (Macoma secta), and Lewis’s moon snails • Red rock crabs (Cancer productus) back in the kitchen, icing after boiling ๑ ๑ ๑ ๑ ๑ #BodegaBay #gaebul #FatInnkeeperWorm #UrechisCaupo #BayGhostShrimp #NeotrypaeaCaliforniensis #LewissMoonSnail #EuspiraLewisii #PacificGgaperClam #TresusNuttallii #RedRockCrab #CancerProductus #crabbing #clamming #huntergatherer #SonomaCounty #California #naturalhistory

A post shared by Christopher Reiger (@christopherreiger) on