This one’s for all the flatworms of the genus Pseudobiceros who got saddled with motherhood due to their inferior penis fencing skills
Some delightful reading for the uninitiated

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This one’s for all the flatworms of the genus Pseudobiceros who got saddled with motherhood due to their inferior penis fencing skills
Some delightful reading for the uninitiated
Spooky worm of the day: the halloween flatworm from real life!
(10/17/21)
I'm not sure, but you might be interested in flatworms?? If they lose their tail (in an attack or accident) not only will it grow back, the separated tail itself will grow into another flatworm. Then you pretty much have twin flatworms.
That is.. very strange. I think I have seen some before but just called them worms.
I googled it just now and I find MARINE flatworms to be particularly interesting. They look very pretty (and admittedly, look like a certain food in the Philippines called “Chicken Bulaklak” [Bulaklak meaning FLOWER in English]). I wonder if aquariums keep flatworms, or if it is legal to? They probably are not easy to find in one- especially if the aquarium is quite large but I’m interested to see one in person.
Actually, I am only assuming this “chopping a flatworm in half produces TWO worms” is also applicable to marine flatworms- so if that is not the case, I do apologize. BUT thank you for bringing marine flatworms to my attention, I really like their colours.
Marine Flatworms: The World of Polyclads
Marine Flatworms: The World of Polyclads Marine Flatworms provides a fascinating introduction to the intriguing world of polyclad flatworms, a group of large, free-living marine Platyhelminthes, which are found throughout the world but are most colorful in tropical waters. Although not related to molluscs, they are often mistaken for sea slugs because of their brilliant color patterns. Written in an accessible style by two leading experts in the field, this book explores flatworms’ unusual structure, feeding habits, their curious reproductive behaviour (including "penis fencing"), their mimicry and toxicology. With a foreword by Professor Reinhardt Kristensen of the Copenhagen Zoological Museum, Marine Flatworms is the first comprehensive guide to polyclad families and genera. It contains more than 300 colour photographs from every part of the world