It is now the 4^th morning since the tag released from the juvenile white shark. We are getting plenty of satellite hits as the tag continues east. It is now within about 65 miles of landfall of Mexico. Overall it has moved 85 miles in 4 days, so its averaging just over 20 miles a day. We’ll see if it continues on that trajectory!

Interestingly, the tag is right on the edge of a strong chlorophyll front (meaning there's lots of plankton, which means that attracts everyone up the food chain), it seems like there is a current line here and the tag is flowing along with the water at its boundary. During this time of the year the Gulf is typically cold and rich in chlorophyll and meets the warmer North Equatorial Current near the tip of the peninsula setting up this type of front. Notice there is also a finger of cold water (and chlorophyll rich) surging in from the tail end of the California Current.

The confluence of these 3 currents makes this a particularly dynamic area that attracts many open-ocean fishes and sharks. The sea surface temperature where the tag popped up was 22 degrees (C), but within a short distance waters are as cool as 18 and as warm as 24.

Juvenile and adult white sharks have been captured inside the Sea of Cortez, but we don't know whether they are born there or whether they migrate in and out. So it’s very interesting to see this juvenile show up right at the entrance to the Sea of Cortez.