You must not be describing it very well. Provocative pictures of teenagers in swimsuits hardly seems "seriously perverse". It neither qualifies as child pornography under the law, nor would being attracted to that make somebody a pedophile.
These weren't candid shots of the beach. These were posed children. The reason I'm not describing them well is because it's making me uncomfortable to continuously describe them to people who are coming into this discussion with no idea what was posted. You have no idea how queasy I feel typing "child's genitals".