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The horse leech, similar to the medicinal leech, feeds chiefly on earthworms and on other leeches.

Horse Leech

The horse leech, similar to the medicinal leech, feeds chiefly on earthworms and on other leeches.

The skate leech is a parasite on skates, rays, and sharks, and makes ugly wounds.

Skate Leech

The skate leech is a parasite on skates, rays, and sharks, and makes ugly wounds.