A turtle and a snail are 300 feet apart when they start moving toward each other. The turtle walks 5 feet per minute, and the snail crawls 1 foot per minute. How fast are the turtle and snail approaching each other?

The turtle and snail are approaching each other at a combined rate of 5 + 1 = <<5+1=6>>6 feet per minute. Answer: \boxed{6}.