I gotta admit, it's sorely tempting to house a pair of hammerheads in a grow-out tank (the big tank that's in the works). He was telling me that most aquariums don't want young (read: small) hammerheads; they only want 6'+ sharks. Which in turn are much harder to catch.
So he sells pups to people with big pools/lagoons, and then in several years trades them out again for pups, and public aquariums take the larger specimens. According to his research, and seems to be backed up by a couple sources, they tend to grow fatter rather than longer in their first few years, with an average length growth of <5" per year.
And unlike some other companies (eg, sharksupply.com) he was quite forthcoming with his capture techniques, and which public aquariums he deals with (since verified). His website is a little confusing, but if you go to the bottom of his page, he has his pricelist and current stock.
Lastly, he had the sexiest green moray eel there - looked healthier than any eel I've ever seen in an LFS. About 4', great color, plenty aggressive, and no damage. Just thought I'd share that.