This is a super complex law with big teeth, but it only applies to sites that are selling and / or collecting the information of minors. (law.stackexchange.com)
The authors suspect that the presence of big teeth in fossil sperm whales may suggest that they were feeding on large prey, perhaps marine mammals such as seals and other smaller whales as opposed to modern sperm whales, which feed primarily on squid, hardly using their teeth for chewing. (sciencedaily.com)