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Not true according to several sources. Sharks get bacterial infections, viral infections and they suffer from parasites.

Yeah I think that is true, but there don't harm them in any way.

Interesting facts. But is there more?
Resteemed. Read some posts from @davemccoy and join some newbie groups perhaps¿
I'd like to hear more of sharks. We have Bull sharks in our local shallow waters, so there's no swimming unless the dolphins are close.