Marin County fire officials say two boats were involved - The second one had come to rescue two boaters in the water.
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That's when that boat also capsized, sending three more people into the bay.
Everone was rescued, but "two victims were transported to Bodega Bay for evaluation," Marin County Fire said on Twitter.
This afternoon, we responded to a report of two small boats overturned & capsized in Tomales Bay, with 5 victims in the water. All were rescued with help from @CHPMarin, @USCG, & @sonomasheriff. Two victims were transported to Bodega Bay for evaluation. Others released at scene.— Marin County Fire (@marincountyfire) April 12, 2019