The movie kind of plugs along for a while with only brief glimpses of the menacing worms and what's to come but ramps up the action during the final half hour as the film's major characters have their final confrontations with the oozing, ravenous, flesh eating worms. Needless to say some of the human cast meet with grisly deaths.
I own the 2003 MGM DVD and also the Shout! Factory Blu Ray which was released back in late October, 2014. The Blu Ray, like the DVD, presents the film in it's original 1:85.1 widescreen aspect ratio and includes some nice extras including a still image gallery, theatrical trailer, audio commentary by director Jeff Lieberman and interviews with both the director and actor Don Scardino. To see this film for sale on Blu Ray at Amazon click the link: SQUIRM(1976) Blu Ray