Like many failed political careers, the skeleton of a grey whale will soon be beached at San Francisco’s City Hall.

The bones of a deceased grey whale named “Gracie” are expected to be erected in the rotunda at City Hall on Thursday in honor of Mission Science Workshop, a science program for kids that is based in the Mission District that is celebrating its 25th anniversary.

Mayor Ed Lee and city supervisors are slated to appear at the ceremony between 10:30 a.m. and 12:30 p.m. with fourth and fifth graders from Cesar Chavez Elementary School.

Gracie’s skeleton is 30-feet long and bears the same name as a fictional whale retrieved from San Francisco by Spock in “Star Trek IV: The Voyage Home.”