Giant larvaceans make their houses from mucus

Snot houses of the abyss THE deep sea is full of fantastical creatures. Gelatinous pink sea pigs shovel food with arms like tiny sea anemones. Delicate tripod fish stand on chopstick-like stilts. Barreleye fish have transparent heads that reveal all their internal workings. Giant larvaceans hold a well-deserved spot on this list of curiosities. Shaped like oversized sperm, with a head and wide tail, the faintly blue tunicates are just ten centimetres long. But their "houses", ephemeral structure...