Not a problem when dealing with giant squid. It will work for just about anything up to and including the deadly megladon, once thought to be extinct until last week when I sensed it's evil presence. There is one caveat, however. One must never sneek a peek from underneath the blankets protective mantle or dangle any extremities or display bare skin or IT WILL PRECIPITATE AN ATTACK. Other than that you should have no problems, whatsoever. I use a small DSB (Diver's Security Blanket). It handles most of my emotional and security needs as I often dive solo. When diving with a buddy, you may need to resort to a Queen, or even a King size blanket as it must be large enough to huddle both of you underneath it protective shield. Remember that you should save at least a 1/3 of the blanket for both you and your buddy to haul butt back to the boat when you sense danger.