Revealing article shows that there was more to the story of the captures than has been widely known: "We are all aware of the horror of the captures but many are unaware that 5 of those killer whales were forced to strand and then taken captive (see note "a)"). Secondly, we all know that during the Penn Cove captures four orcas had their stomachs slit and were weighted with stone. Many believe that these animals drowned as a consequence of the captures and were weighted to hide the deaths. This document that SeaWorld have put in there research documents tells a completely different story of those four dead whales. Point "b)" on the above table states two of the four killer whales that died during this capture operation were experimentally tranquilized under the direction of Dr Merrill Spencer, Virginia Mason Research Center. The animals subsequently died. Were the animals sunk to hide the dead bodies, or were they sunk as they had been experimentally drugged causing their death? " https://www.thedodo.com/community/godsake2/disturbing-facts-found-in-seaw-882961343.html