Cooked Shrimp still translucent / glassy.

I've been making my own shrimp cocktail lately and really enjoying them.  Most recently, I bought some shrimp from Smart n Final.  They had sale on Great American White Shrimp 16/20, raw, peeled, deveined, individually quick frozen ([Image](https://encrypted-tbn2.gstatic.com/shopping?q=tbn:ANd9GcSYMkcXDXyQrYn0J0rZ8Lll00175EaY7m5JUHokdycSUmKRlObljtCgxgLaMfLz_IpjolwkUWv_BedB9qJOLE7WBks0rwQF)).  However, after cooking them, the meat didn't turn opaque white like I'm used to.  It was still a bit translucent and glassy.  There was red/orange color to the usual areas, but the meat through and through was not white.  The texture was firm, and bouncy.  Actually it felt very bouncy, like extra firm gelatin.  I thought maybe I didn't cook it enough, so I cut some up into smaller pieces and pan fried it.  Same result.  The meat never quite became opaque white.  

Have you guys ever experienced this?  Is the shrimp safe to eat?