Eight island ponds – Gibbs Pond at Barnard Valley Road, Capaum Pond at Water Tower Beach, Hummock Pond at Ram Pasture, Head of Hummock Pond, Miacomet Pond at Miacomet Beach, Miacomet Pond at Buchell Circle, Washing Pond and Maxcy Pond – currently have harmful algae blooms, town officials announced this week.