This is a didemnum molle, which is a species of sea squirt. A couple more pictures below:
These are the fruiting bodies of a bird’s nest fungus. The little round bits are peridioles, which contain spores. When rainwater hits the fungus, the peridioles are tossed out, and they stick and release spores where they land. Totally harmless, the fungus feeds on decaying organic matter. It likes to grow in mulch and decaying wood.
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