Rockport: From left, fifth graders Fiona Noring, Olivia Vorias and Emma Brousseau look at a sample of callosity tissue, a dark tissue that grows on the top of whales used for identification, while listening to a presentation about whales at Rockport Elementary School Friday morning. Moira Brown of Rowley, a member of the New England AquariumÕs North Atlantic right whale research team came to speak to the forth and fisfth grade classes about the the work that they are doing to save the fewer than 400 whales just off Cape AnnÕs coast. Mary Muckenhoupt/Gloucester Daily Times

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