add captions to Rocky Shore - Mussels

[bbest]

From Punch List for Sanctuaries Interactive infographics - Google Docs...

Captions empty for interactive figures?

• See script, eg rocky.R, and add caption a la: + captions for mussels modal in rocky intertidals · marinebon/cinms@ab97fa9

[bbest]

Added captions already:

Map of Sites

California Mussels (Mytilus californianus)