ooo! A pretty Phyllochaetopterus from Monterey Bay #wormwednesday www.inaturalist.org/observations...

#wormwednesday

#wormwednesday

Not a fish! Reposting for #WormWednesday

Beautiful deep-sea nematode hosting live young! Lots of Desmodorids are naturally pink like this, without staining #WormWednesday

Echoes of ISFB, we stopped for planarians during traveling back to our base. Unusually light population of Dugesia gonocephala, Bleicheroder Berge, Germany. #invertebrates #WormWednesday 🧪 🌿

#WormWEDNESDAY!

oh carp! a pretty big arrow worm/chaetognath! 5390 m #wormwednesday deep basin rock mount American Samoa

A tiny Acoela adorned with golden granules. The granules are symbiotic algae (Symbiodiniaceae). Found in the coastal waters of the Northern Adriatic. #wormwednesday

Underwater fireworks – mitraria larva of Oweniidae polychaete worms with long, glittering bristles from the coastal #plankton of the northern Adriatic Sea, one of the most beautiful floating marine organisms! #WormWednesday

Tiny sailor, between two transparent valves – cyphonautes larva propels water with two ciliary bands into the mantle cavity. Tentacles of sessile, adult zooids are covered with similar cilia. North Adria, #plankton, #invertebrates, #WormWednesday

Two-in –one – Ophiuroid with an unknown epibiont: a Myzostomida? Juvenile Amphipholis squamata may also appear on the parent, but looks different. Northern Adriatic Sea benthos, #Invertebrates, #WormWednesday

A monostiliferan larva (Hoplonemertea) from the coastal #plankton of the northern Adriatic Sea. At rest its stylet lies at the bottom end of the proboscis (in the middle). #Invertebrates #WormWednesday

Gordian knot - or not? Polygordius or a relative from the #macrozoobenthos from the northern Adriatic Sea. #WormWednesday

Aging out! Late stage, planktotrophic spionid larva from the #plankton of the northern Adriatic Sea. #WormWednesday, #Invertebrates

Mitraria's Fan Dance (W. Garstang) - Fascinating facts behind iridescent chaetae of Oweniid larvae: their highly derived looks doesn't instantly remind typical trochophore ground plan. Their embryonic development has been considered to be deuterostomous for decades.#WormWednesday

Polyclads are marine turbellarians with biphasic life cycle. Ciliated larvae with different number of lobes are often found in coastal #plankton. Müller's larva and Götte’s larva from the northern Adriatic Sea. #WormWednesday

Polyclads are marine turbellarians with biphasic life cycle. Ciliated larvae with different number of lobes are often found in coastal #plankton. Müller's larva and Götte’s larva from the northern Adriatic Sea. #WormWednesday

An abundant polychaete worm from the #meiobenthos of the northern Adriatic Sea. Any closer affiliation? #WormWednesday

Soft bodied and translucent arrow worms are in fact dangerous hunters of the #plankton with double armour: scary chitinous grasping spines serve hunting, while invisible bacterial symbionts may produce deadly tetrodotoxin, paralyzing prey. Northern Adriatic Sea, #WormWednesday