User:AshLin/DYKDraft5
Spiculosiphon oceana
a giant two-inch-long (five centimeters) single-celled organism (protist) called an agglutinated foraminifer (Spiculosiphon oceana), which welds its own skeleton together using organic glue and discarded silica sponge spicules—glassy sponge-skeleton components shaped like needles. When it's done, it looks remarkably like a carnivorous sponge. And it behaves like a carnivorous sponge too: It impales plankton on its pointy home and squeezes part of its body through gaps in its armor to feed on them.