My backyard has been positively overrun with mushrooms. This is only a small portion of my backyard:

They really have taken over the yard, thanks in part to a dead tree trunk that’s about 6′ tall. They’re covering the root lines immediately around the trunk, and they’ve spread into the opposite side of the yard, and into my smaller flower beds as well.

They’re also growing out from under my house:

The mushrooms definitely have a fishy smell, and it’s disgusting.

They’re a little creepy.

I did some reading, and found that mostly I should just leave them alone. But it’s hard, because they smell incredibly bad. And as they die off, they turn black, and the smell gets worse. Sigh.

Anyone know what kind of mushrooms they are?