Remember that baby white shark that was outfitted with two satellite tags and released on July 17? For a long time, it mosied around Santa Monica, Long Beach and made its way to San Diego, then made a bee-line, uh, shark-line, for Mexico. On Monday, it was halfway down Baja California. Sal Jorgensen and Mike Castleton at Hopkins Marine Station put this track together.

Two tags were put on the shark: One was a pop-up tag (PAT), which will release from the shark 180 days from July 17. The shark researchers should get a message from that tag mid-January. The other is a SPOT tag -- smart position or temperature transmitting tag -- that sends its location information to the Argos satellite every time the shark surfaces.

Here's the moment that John O'Sullivan, curator of field operations for the Monterey Bay Aquarium, hefted the baby back out of its cradle and back into the ocean. Some baby.

This is a closeup of the tags they put on the shark. The one on the dorsal fin is the SPOT tag. Every time the shark surfaces, the antenna on the tag transmits a signal, and if the Argos satellite is within range, it picks up the signal and transmits it to the shark researchers. You can see the top of the popup tag on the left: it looks like, and is about the size of a hand-held microphone. The pop-up tag is recording what the baby shark is doing -- the depth of its dives, how long it's staying under water, and the water temperature. It also can determine the location, but not as precisely as the SPOT tag. So, the two together provide pretty good information about the life of this youngster.

We'll keep you posted on its whereabouts, and hope that nobody catches it for dinner.