Sea sponges are weird all on their own, but their tenants are even weirder. Many sponges are host to a variety of worm species which live inside their digestive canals. The exact nature of these relationships isn’t totally clear, but they appear to be symbiotic in many cases.
Australia truly is the land of ridiculous creatures. From vicious magpies to moths too big to fly, the land of the upside-down is home to freakish sights of nature that would seem out of place anywhere else in the world.
Now entering the stage, however, could be the weirdest of them all – the worm with one hundred buttholes.
Making a home in the internal canals of sea sponges,
Ramisyllis multicaudata is an insane marine worm that is just one of only two known species with a branching body of one head and multiple rear ends. Native to Darwin, Australia, these worms use their unique body shape to spread out across the many tunnels within the sponge and live symbiotically with their host.