I grew up in south Florida, and I often hopped on my bike and rode three miles to the beach. So you'd think my biggest fear might be the occasional alligator that I encountered stretched across the bicycle path OR the nearly 9-foot lemon shark that swam within a few feet of me when my father and I were standing along the seawall. Yes, these were a little "off putting" to say the least, but the creatures that gave me nightmares were the giant blue land crabs!
Whenever we had a heavy rain, the land crabs were flooded from their shallow holes, and they came out snapping. I hated going out my front door on a rainy morning because the crabs often took refuge on our front porch--not just one, but sometimes four or five. They were blue and white and pink and sometimes spanned more than a foot with their claws outspread. I could hear the clicking of their feet on the terrazzo floor of the porch, and their claws looked strong enough to snap off a toe or a finger. There was a nearby park where my family often went for picnics, but I always avoided the sandy/muddy area sloping down to the pond. It was pockmarked with holes, often with large eyes peering out at me and with a claw ready to attack. No, I was never actually grabbed by one of those claws--except in dreams.
Would one of these scare you?