The Hanauma Bay Education Program has announced its free events for July, with the first at for 6:30 tonight.

Heather Leba, a graduate student and research assistant in the University of Hawai'i's zoology department, will discuss "Choosing a partner: How do reef fish decide?"

Here is the schedule for the rest of the month:

July 10 — "Can you hear me now? How do butterfly fish make sound?," a lecture by Kelly Boyle, a student at the University of Hawai'i's Institute of Marine Biology

July 17 — "How much energy do reef fish use to swim?," a lecture by Keith Korsmeyer, an associate professor in Hawai'i Pacific University's College of Natural Science

July 24 — "Sharks — Stewards of the Reef," a film by David McQuire

July 26 — Hawaiian Ocean Traditions, 6 to 9 p.m., an education program that will include lectures and presentations, and crafts for families. This event will take place from

July 31 — "What determines the health of coral reefs?," a lecture by Jennifer Salerno, a student at the Institute of Marine Biology

All events, with the exception of Hawaiian Ocean Traditions, are scheduled from 6:30 to 7:30 p.m. at the Hanauma Bay theater. Parking and entrance to the bay are free after 5:30 p.m. No reservations required. For more information, call 397-5840 or send an e-mail to hanauma@hawaii.edu.