Here are 3 things you need to know for today, Sunday, October 12, 2014.

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1. Celebrate Halloween with a creepy collection of stories about the animals that live in the deepest parts of the ocean at the Marine Mammal Center.

2. Have an old Halloween costume? Donate it to the kids at UCSF Benioff Children’s Hospitals in SF and Oakland by dropping it off at Kent Middle School between 2-4 p.m.

3. There’s a new rec center in town and you can join the Grand Opening Celebration at Dairy Knoll in Tiburon.

What event are you attending today?

— Erin Lem

photo by Scott Clark via flickr