What eats rock, poops sand, and bores holes in riverbeds?

A Bizarre New Species of Mollusk Eats Rocks, Poops Sand, and Shapes Rivers?

Lithoredo abatanica, a very weird shipworm found in a river in the Philippines, represents both a new species and genus.

“It turns out [locals] have known about these animals for ages and they feed them to young mothers to induce lactation,” said lead author Reuben Shipway, a marine biologist at Northeastern University, in a phone call with Motherboard.

More at Source: https://www.vice.com/en_ca/article/bj9b74/a-bizarre-new-species-of-mollusk-eats-rocks-poops-sand-and-shapes-rivers-shipworm