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

Unidentified Polycladida larvae from the plankton of the North Adria. Four longer and two shorter lobes well visible, plus two more are hidden. Probably Müller’s larvae. #WormWednesday #plankton #invertebrates

Like in the textbook! Annelid trochophore larvae from the North Adria. #WormWednesday, #Plankton, #Invertebrates

Like in the textbook! Annelid trochophore larvae from the North Adria. #WormWednesday, #Plankton, #Invertebrates

Acoela (maybe Isodiametra pulchra?) from the #meiofauna of the coastal waters of Istria, the northern part of the #AdriaticSea for #WormWednesday #marinebiodiversity #invertebrates

Mitraria larvae from the coastal waters of Istria, January 2018. Peacock of the Adriatic Sea!
#WormWednesday #Plankton #Invertebrate

Mitraria larvae from the coastal waters of Istria, January 2018. Peacock of the Adriatic Sea!
#WormWednesday #Plankton #Invertebrate

Young Tomopteris held fast by its Hydrozoan predator; both lost in the coastal waters of the North Adriatic (link: https://drive.google.com/file/d/0BzBiGN15u4-vbUxfd2p6eXlkVlk/view) #WormWednesday

Kinorhyncha (Echinoderes sp.) from the littoral sediment of the North Adriatic #WormWednesday

Kinorhyncha (Echinoderes sp.) from the littoral sediment of the North Adriatic #WormWednesday

Gordian knot from the Adria; Polygordius sp. from the littoral sediment. https://drive.google.com/file/d/0BzBiGN15u4-vV1d1Mm9iNFVJcXM/view?usp=drivesdk #WormWednesday

Strange worm from the coastal plankton of Northern Adriatic: might be a young priapulid? #WormWednesday

Strange worm from the coastal plankton of Northern Adriatic: might be a young priapulid? #WormWednesday

Strange worm from the coastal plankton of Northern Adriatic: might be a young priapulid? #WormWednesday

Strange worm from the coastal plankton of Northern Adriatic: might be a young priapulid? #WormWednesday