Sekolah was first fully detailed in Deities and Demigods (1980).^[2]

Sekolah was detailed in the book Monster Mythology (1992), including details about his priesthood.^[3] His role in the cosmology of the Planescape campaign setting was described in On Hallowed Ground (1996).^[4] Sekolah's worship was further detailed in the book The Sea Devils (1997).^[5]

Sekolah was described briefly in Defenders of the Faith (2000).^[6] His priesthood is detailed for 3rd edition in Complete Divine (2004).^[7]

Sekolah resembles nothing so much as a 35-foot-long (11 m) great white shark. He can normally be found hunting giant squid and other prey that he finds suitably challenging.

Sekolah is a rapacious monster who cares nothing, one way or the other, for any race but the sahuagin. Deep Sashelas hates him in particular, however. Demogorgon reviles Sekolah, although he does not act against him directly. Sekolah has nothing to do with the long-imprisoned Anguileusis.

The Great Shark permits the sahuagin to form temporary pacts with other evil deities; he cares little as long as he continues to receive regular sacrifices from his priestesses.

Sekolah's realm Sheyruushk is located in Stygia, the fifth of the Nine Hells. The sahuagin petitioners in Shreyruushk surround Sekolah in perfect geometric formations, and any who fall out of line are eaten. Sekolah is a crafty, evil beast, and has been known to surface to converse with (and devour) baatezu ambassadors to the monarch of the deep.

Sekolah represents uncaring force and brutality. He is also a fertility god.