ðə skˈuːl kəmpˈiːts ɪnðə sˈændkæsəl kˈʌp, ɐn ˈænjuːəl ɡˈeɪm bᵻtwˌiːn ðə mˈæɹɪnɚz ænd sˌɛmɪˈɑːmuː sˈɛkəndɚɹi skˈuːl θˈʌndɚbˌɜːdz.
The school competes in the Sandcastle Cup, an annual game between the Mariners and Semiahmoo Secondary School Thunderbirds.