Found these creepy red tentacles erupting from a slimy egg sack in my mulch bed. Is this some kind of alien invasion?

Regularly turning your mulch can also help disrupt the growth of the fungus by disturbing its life cycle. Additionally, maintaining a tidy garden, free from excess debris, can reduce the likelihood of fungal growth.
10. Other Creepy Look-Alike Fungi You Might Mistake For Aliens
Several other fungi share the unsettling appearance of Devil’s Fingers, often leading to confusion among gardeners. The Octopus Stinkhorn (Clathrus columnatus) and the Basket Stinkhorn (Clathrus ruber) are two such examples, both featuring bizarre structures and foul odors.
These fungi, like Devil’s Fingers, are part of the stinkhorn family and serve similar ecological roles in decomposition. While their forms may differ, they all share the characteristic of attracting insects with their smell to aid in spore dispersal.
11. When To Call An Expert About Strange Growths In Your Yard
While most fungal growths in your garden are harmless and can be managed with simple measures, there are times when consulting an expert may be beneficial. If you notice an unusual increase in fungal growth, or if the fungi are affecting the health of your plants, a local horticulturist or mycologist can provide guidance.
Additionally, if you’re unsure about the identification of a particular fungus or concerned about its potential impact on your garden’s ecosystem, seeking professional advice can offer peace of mind and ensure your garden remains healthy.