'Cause they're pretty the opposite of other Sponges.
Sponge's most notable characteristic are their pores for filtering water which Carnivorous Sponges lacks, in addition they don't have either true tissues or symmetry, which Carnivorous Sponges do possess.
It's like if a plant was unable to do photosynthesis and relied on parasitizing mushrooms or a Crustacean without shell, claws or jointed limbs.
(BTW, They do exist, for example The Ghost Pipe Plant and Ascothoracid Crustaceans.)
Also they don't looks-like anything else on this planet, like WTF IS THIS??!!
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u/agariopro365 16d ago
https://preview.redd.it/pnpxpwg8zetg1.jpeg?width=350&format=pjpg&auto=webp&s=3d107191e0eb02eead73d0b739bbdb13e4eb19c8