Dan was one of the most honest and compassionate people I ever had the privilege to know. The world is a lesser place without him in it, but I'm comforted by the fact that he was able to pursue his research, about which he was so passionate, for so long - and by the fact that he was able to share that passion with others who loved him. I never see photos of humpback whales or hear a recording of their majestic calls and songs without thinking of Dan - and grinning at the memory of his recordings of those calls echoing through the empty halls of the Rendleman Building (and, later, Classroom Building III) at SIUE when he spent time in his office on weekends. Thanks, Dan, for teaching me - through your words and your actions - so much about the interconnectedness of all the species on this planet and about our joyful opportunity and solemn obligation to be good stewards of the lands and seas we co-inhabit.