2,658 Pages


Seaworms on the cover of Sandworms of Dune.

Expanded Dune
This article or section refers to elements from Expanded Dune.

Seaworms are a genetically modified form of the sandworm. Tylwyth Waff created them, and released them into the ecosystem of Buzzell.

Waff modified some sandtrout to thrive in a watery environment when matured into worm form. The experiment succeeded beyond all expectation, and soon the soostone harvesting came to an almost-complete halt, as the seaworms were viciously territorial and killed many Phibians engaged in the harvesting.

When captured and dissected, an internal organ found in the seaworm contained a particularly potent form of spice, later referred to as ultraspice.

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.