Tethya leysae is a species of sea sponge belonging to the family Tethyidae,[1] found in the Canadian north-west Pacific.

[2] It was first described by Heim and Nickel in 2010, [1][2] from specimens collected by Sally P. Leys from a rocky bottom substrate (10 m-25 m in depth) near Ohiat Island, British Columbia in 2003 and 2006.

[2] The species epithet honours Sally P.

Leys.

[2]