KAPALUA, Maui — A 43-year-old Texas woman apparently suffered a fatal heart attack today while swimming at Honolua Bay, police said.

Elizabeth Danheim of Houston began struggling in the water about 10:35 a.m. and was helped onto a rocky outcropping, according to police. The woman was experiencing difficulty breathing and lost consciousness. Paramedics and Maui Fire Department personnel were unable to revive her and she died at the scene, police said.