. Mark Shagena: the 1986 Ironman, a sprinter from Michigan who has already proved to be an inspiration after last weekend's performance.

. Other freshmen include Micheal Anderson, Jay Fisher, Matt Kittleberger, David Lee, Andrew Pardieck and Kresimir Peharda.

Returning Aquamen

The newcomers will join a solid core of established swimmers, most of whom are juniors and sophomores. Here are a few of the names that should be heard from over the season:

. David Berkoff: Harvard's best swimmer last year, a junior backstroker who can also be deadly in the individual medley. Berkoff finished third in the 100-yd. backstroke last year at the NCAA championships and owns the school record in both the 100 and 200 backstroke races.

. Bill Bird: a junior butterflier who should come into his own this year, now that he is out of Egan's shadow.

. Pat Healy: Harvard's best diver, a sophomore who needs to have a strong season to keep teams from stealing points from Harvard on the boards.

. Scott Hoy: this sophomore is the team's best returning breaststroker, who last year really peaked at Easterns.

. Keith Kaplan: the number one sprinter for the Crimson, a sophomore with super talent who must establish himself more.

. John Pearson: a junior distance man who should benefit from the competition Johnson provides in practice.

. Jeff Peltier: a junior backstroker who has spent time behind Berkoff.

. Lars Reierson: one of the team's co-captains, a senior who looks primed for his best year ever.

. John Ritch: a junior freestyler who is a good athlete; the squad needs him to perform.

. Dan Simkowitz: the other co-captain, who, like Reierson, is determined to exit in a blaze of glory.

. Other returing swimmers who will help at Easterns include senior Jim Kornish and junior Chris Smith--two sprinters who should make the Harvard relay a good one. Bill Cleveland and Marty Caverly are also potential point-scorers.