A bioblitz is a quick, intense survey of the species present. Hone your observation skills, become a field biologist for the day, and have fun! Nature-curious folks of all ages and experience levels are welcome.

Meets at the Rock Spring Trailhead. The day will start with a quick how-to and an introduction to iNaturalist and the inhabitants of Mt. Tam. We will then hike at naturalist pace for up to 3 miles as we look more closely at some of the surprising secrets of the mountain and learn about the unique habitats on Mt. Tam.

Dr. Lisette Arellano works at the Golden Gate National Parks Conservancy as the Community Science Senior Program Manager for the One Tam collaborative. Her team supports the health of Mount Tamalpais through a variety of community science activities that aim to address ecological data gaps, implement long-term monitoring, provide meaningful educational opportunities, and promote curiosity and participation in a wide range of audiences. You can learn more about One Tam community science here: https://www.youtube.com/watch?v=L13aMad5bZc

Lisette is an ecologist, naturalist, educator, athlete, mom, and storyteller with broad interests. You can read a bit more about her here: https://www.inaturalist.org/blog/55770-meet-lisette-arellano-ten_salamanders-an-inaturalist-monthly-supporter

CAPACITY: Only RSVP if you are able to attend

PARKING: We strongly recommend carpooling and arriving 30 minutes early to locate parking. Pantoll and Bootjack require a $8 fee - bring exact change! you can also pay through the Yodel app. The Quarry Parking lot (just past Mountain Theater) is an option if Rock Spring Parking lot is full. Pantoll parking is very limited – BootJack sometimes will have open spots or there are limited parking spots along Pantoll Road heading up to Rock Spring. Bus service schedule is available at https://marintransit.org/routes/61

FAMILIES: Suitable for families with children who are interested in nature and are comfortable hiking 2-4 miles.

DURATION: Each event is scheduled to last no more than 2 hours

CANCELLATIONS: Rain, red flag days, winds above 30 mph, and unforeseen circumstances will cancel. Check the Friends of Mt Tam Facebook for updates: https://www.facebook.com/FriendsOfMtTam

WATER: Bring your own water. Most hikes do not pass by public drinking water sources.

STURDY BOOTS: Trails are uneven, rocky and can be very steep in places. Sandals, sneakers and running shoes are not recommended.