This season offers a unique opportunity for children and parents to explore the mystery of life along San Diego’s coastline during tidepooling excursions with Birch Aquarium at Scripps Institution of Oceanography, UC San Diego. Winter is an excellent time to explore tide pools, as low daytime tides reveal waters teeming with native marine life such as hermit crabs, sea hares, and sea anemones. The aquarium’s naturalists show participants how to traverse through these ecosystems and explain the plants and animals found on site. Children ages 2-13 must be accompanied by a paid adult. Locations, times, and directions will be provided at time of RSVP. (858.534.7336, www.aquarium.ucsd.edu)    ALICIA GARCIA