Examples of cities bordering oceans:
New York, Boston, Miami, Los Angeles, San Francisco, Seattle
London, Paris, Barcelona, Lisbon, Rome, Athens
Tokyo, Shanghai, Hong Kong, Mumbai, Singapore, Bangkok
Cape Town, Lagos, Dakar, Alexandria, Tunis, Casablanca
Rio de Janeiro, São Paulo, Buenos Aires, Lima, Santiago, Valparaíso
Many more coastal cities exist globally.