A Sea of Bad Drawings.

And a sea of Bad drawings from which the sleepy croco has been airlifted away from. One sheep isn't too bad, but when a bunch of these guys show up, you can be sure you'll be losing sleep over it. They'll move into your space, eat your thoughts, litter the noble sanctuaries of your mind and just downright aggravate your sense of well-being. Instead of counting sheep to go to sleep, these guys will keep you awake. On purpose!

Collectively I think instead of "sea" it should be "crop" or some other word. A crop of bad drawings! But it's meant to go along with the sleepy croco pic.

There are some interesting collective names for animals out there. A parliament of owls, a murder of crows, a clutch or chattering of chicks, a brood of chicken, an intrusion of cockroaches, a weyr of dragon, a pod of whales, etc.