https://phys.org/news/2018-07-fin-trafficking-threatened-sharks.html

"If this is an accurate reflection of imports, we would expect CITES-listed species would be uncommon among fins being processed in 2015-2016," says Cardeñosa.

"However, our research shows is that these species are still commonly being processed at least one year after regulations were implemented," emphasizes Cardeñosa. "In fact, CITES-listed scalloped and smooth hammerheads represented the 4th and 5th most common species found in our survey, out of 82 species and species groups in total." He also pointed out that because the time lag between import and processing is unknown, it is difficult to determine if some of the fins were imported before the regulations were in place.