Sharks might not be the cutest endangered animals, but as of 2011 they are in trouble. The International Union for the Conservation of Nature lists 143 species of shark as “endangered” or “critically endangered” “near threatened” or “vulnerable” on its “Red List,” and 210 more are listed as “data deficient.” Less than a quarter of the known shark species in 2011 were classed as “least concern,” as in under no immediate threat.
