https://www.fisheries.noaa.gov/feature-story/12-shark-facts-may-surprise-you

12 Shark Facts That May Surprise You

18/12/2019 - 1. Sharks do not have bones. Sharks use their gills to filter oxygen from the water. They are a special type of fish known "elasmobranch", which translates into fish made of catilaginous tissues—the clear gristly stuff that your ears and nose tip are made of. This category also includes rays, sawfish, and… SEE MORE