Gross moment a razor fish spews grit as it burrows into the sand during low tide

This is the bizarre moment a razor clam defecates on a beach as it burrows into the sand.
Razor clams use a long muscle inside their shell to help them get below the surface of the sand.
In this video, the clam is worming its way down into the ground, when it decides to unload itself.
The clam can be seen to spurt out a jet of a black substance, before continuing to burrow.
Razor clams have two siphons - an inhalant, and an exit siphon - which are next to each other and at the opposite end of their foot.
Razor clams are long and rectangular and can grow up to nine inches (23cm) though many are smaller than this.
Their shells are fragile and open at each end. They don't have eyes or a head, but do have a mouth, a heart, kidneys, gills and an anus.
In the video, it appears the clam is getting rid of some of its way before it gets into the sand to hunt.
Razor clams are bivalves, which means they filter water as they feed. They mostly eat plankton, which they take on through one siphon.
As it moves through them, they use another siphon to expel the water.
The Pacific razor clam was spotted on the cost of Oregon last month.