Here are some ways to protect earthworms:
1. Avoid using pesticides and herbicides: These chemicals can negatively affect earthworms, causing death or harm.
2. Avoid tilling excessively: Over-tilling soil can destroy earthworms' habitats and exposes them to predators.
3. Add organic matter to soil: Earthworms need organic matter to feed on and for habitat. Adding compost or other organic matter to the soil can support earthworm populations.
4. Avoid compacting soil: Compacted soil can make it hard for earthworms to move through the soil and access food, water, and oxygen.
5. Avoid overfishing: Some species of fish prey heavily on earthworms. Overfishing can lead to a decline in earthworm populations.