Excerpt from All About Sharks: A Complete Guide to the World’s Most Misunderstood Predator (Nov. 2017):
Though the spiny dogfish (Squalus acanthias) only grows to about 3 feet (1 m) in length, it is one of the most hated sharks by fishermen, especially in New England, where the shark is an abundant hazard.
In front of both the dorsal fin and second dorsal fin of the spiny dogfish is a hard spine extending like a spear.
When attacked, the shark curls up and stabs the predator with its poisonous barb.
While the poison can kill some animals, it isn’t enough to kill a human. However, some fishermen have reported the barb stuck so deep a friend had to pull it out, leaving a wound that hurt for days.
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