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Baum analyzed 42 teeth from blacktip reef sharks at an
in Germany. He put the teeth in two
water tanks for eight weeks. The
water in one tank had a pH level similar to current ocean
. The water in the other tank was more
. Baum found that the teeth in the more acidic water had visible damage. This included
, root decay, and structural deterioration. He said ongoing
could impact how sharks feed. He added that
damage could
trigger "domino effects" across many marine
.