i'm cecilia vega. welcome to "60 minutes presents."hree stories of animal magnetism attract us. we go to the coast of puerto rico, where the inhabitants roam free, and have much to teach the scientists who follow them. sharyn alfonsi also investigates. but we begin in the depths of t the sea. one of the animals at risk is also one of the largest in the ocean and among the least understood. sperm whales are not the predators of moby dick legend. they have brains six times larger than ours and spend most of their lives in the darkest depths of the ocean. it's difficult to describe their size without comparing them to a school bus. last spring, we traveled with nationalgeographic explorer's enric sala to dominica. >> most of enric sala's dives don't start like a fire drill, even though he spent thousands of hours underwater as an explorer. >> look down. >> back of you. >> this way! >> we came face to face with a pod of whales but these are not the whales we traveled all this way to see. they are pygmy killer whales, known to threaten sper

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my name is cecilia vega mayer.'m the director of community programs at the san francisco bicycle coalition. and i just wanted to reiterate a lot of the things that tracy has said and share a little bit more about the communities that we aim to serve with both our outreach and our classes that usually result in our subcontractor doing outreach in these communities. as, as tracy said, we do all of our outreach in multiple languages. all of our outreach materials are in english, spanish, tagalog or filipino and chinese or mandarin. and these outreach materials are not only advertising our classes, but they also share best practices for biking on the road. you know, they start to get people interested in what you can learn at our classes. you can learn how to signal and navigate traffic and navigate intersections. you can learn about all the new types of bicycle infrastructure in the city, and as tracy said, we do outreach in every supervisor district in the city and often multiple times throughout the year in multiple