The reason the florida blacktips (Carcharhinus limbatus) don't readily survive is that they have a really high oxygen demand. I currently have one that I brought back to CA from the Gulf of Mexico. The transport process is highly involved and complicated but they seem to do well once acclimated. The blacktips seen at some pet stores and wholesalers is Carcharhinus melanopterus. It ships very well in standard fish boxes and can easily survive 48 hour transits. The florida blacktips are also a little more high strung and therefore need more room than the C. melanopterus. Most sharks and rays are legal to keep in CA but freshwater sharks and rays are not (unless you have a permit). Leopards(Triakis semifasciata) cannot be posessed in CA unless they are at least 36" long and be prepared to show proof that you obtained it legally. If you want to collect a live one yourself you will need a marine aquaria collectors permit from the CA DFG.

send something before to AUSTRALIA?