It was ocean but it was sort of like hitting a shallow puddle for a 10 km diameter rock. The article didn't say but I was also curious and looked it up on Wiki

It was ocean but it was sort of like hitting a shallow puddle for a 10 km diameter rock. The article didn't say but I was also curious and looked it up on Wikipedia: > The water depth at the impact site varied from 100 meters (330 ft) on the western edge of the crater to over 1,200 meters (3,900 ft) on the northeastern edge. https://en.wikipedia.org/wiki/Chicxulub_crater#Impact_specifics https://en.wikipedia.org/wiki/Chicxulub_crater#Impact_specif...