@whatonearth_tv: This parasite doesn't just infect a crab. It takes over completely. Sacculina dissolves itself into a network of roots through the crab's entire body. If the host is male, it feminises him — changing his hormones, his behaviour, everything. Then it makes him carry its eggs as if they were his own. The crab will never reproduce. It exists only to serve the parasite. #parasite #crab #oceanfacts #marinelife #naturefacts #horror #biology #woetv