^^ Dude. That's the coolest (little) mushroom shot. Ever.
They're all of about an inch high, right?
Crustacean- I'm guessing the first one is a slippery jack and the 4th one is an oyster. But it's been a while since I've hunted them, and I'd have to see them in person and check my 'shroom bibles ("All that the Rain Promises" and "Mushrooms Demystified", David Aurora).