White Flatworms Under Pots in Hawaii: Planaria or Horsehair Worms

Hawaii: Thin white flatworms under pots, black line down body, heads indistinguishable. Photo reference: similar but white with single stripe.

Likely ID

• Terrestrial planaria (flatworms): Predators on slugs/snails.
• Horsehair worms (nematodes): Parasites in insects, long/thin.

Google both images for match.

Harmless

Neither hurts humans, pets, or plants. Beneficial (eat pests).

No control needed. Curiosity only.