With drones making spying on sharks simpler than ever, movies of close encounters the place swimmers and surfers are oblivious to the predators’ presence have change into commonplace. What’s not widespread is to see individuals willingly flock to a shiver of sharks to hang around with them. However that’s precisely what occurs each summer season on the shores off the coast of La Jolla in San Diego, California.
Between June and September, the La Jolla coast performs host to a whole lot of pregnant feminine leopard sharks, with August and September being the height months for shark sightings.
These sharks, which get their title from darkish grey darkish spots overlaying their gentle grey backs, are completely innocent to people. They principally eat crabs, shrimp, worms, clams, and a few species of small fish like anchovies. They usually crowd the shallow waters of La Jolla for a similar motive that people do: the climate.
Leopard sharks love heat water as a lot as we do
Andrew Nosal, who teaches marine biology on the College of San Diego, says the topography of the La Jolla canyon helps to lure heat water. And the pregnant, cold-blooded sharks are interested in that. Explains Andrew:
They appear to be interested in heat water, and what we predict is going on is these pregnant females are primarily incubating their creating embryos, sort of like a mom hen sitting on eggs to maintain them heat.
The gestation interval for pregnant leopard sharks will be so long as 10 or 11 months. Furthermore, these sharks give beginning yearly. As such, dashing up gestation with hotter waters offers the creatures extra time to relaxation and discover a mate, Andrew tells.
After leaving California, the sharks are recognized to swim north – although researchers like Andrew have nonetheless not found out precisely the place they go. However every time a pod makes its approach again to La Jolla for the summer season, ecotourism prospers. And this 12 months isn’t any completely different.
A college of leopard sharks has returned to La Jolla, and you’ll spot them not too removed from the shore.
Let’s watch the longer model…