Bike ride to Orchard Beach Lagoon boat launch, which opens up into a truly diverse marshland ecosystem one wouldn’t expect to find so close to the city. Then canoe along serene waters and spot egrets, hummingbirds and, if it’s low tide, harbor seals playing along the shore. To register, e-mail timesup.events@gmail.com. Ride meets at Pelham Bay Park at the end of the #6 Train, at the bottom of the ramp in the park.