They are traditionally a seafaring community that is engaged in fishing, shipment and seaborne trade. They fish mostly in deep seas, and employ gillnet and seine fishing methods. The Karaiyars were the major maritime traders and boat owners who among other things, traded with pearls, chanks, tobacco, and shipped goods overseas to countries such as India, Myanmar and Indonesia. The community known for their maritime history, are also reputed as a warrior caste who contributed as army and navy soldiers of Tamil kings. They were noted as the army generals and navy captains of the Aryacakravarti dynasty.