Alexander Lee "Xander" Katona, a recent marine science graduate from the University of Miami who had plans to pursue trophic ecology, the study of food chains in ecosystems, died of cardiac arrest related an undiagnosed heart condition Nov. 8 in Gainesville, Fla.
The Hamilton resident was 21.
Born in Baltimore, he was the son of Joseph M. Katona, who owns a computer repair firm, and Shannon Thompson Katona, an educational worker. He attended Roland Park Elementary and Middle School and was a 2011 graduate of Polytechnic Institute, where he studied in the Ingenuity Project. He played squash and was the baseball team manager.
He was active in after-school...