The Azores archipelago lies at the crossroads of three Atlantic migratory corridors, and twenty-eight cetacean species pass through Faial's waters annually — more than a quarter of all known whale and dolphin species worldwide. Naturalist Science & Tourism Whale Watching Horta operates from Cais de Santa Cruz, a quayside research station and departure point where marine biology meets public education. Founded to bridge academic cetacean research and sustainable tourism, the organization deploys certified marine biologists on every expedition, transforming sightseeing into participatory science. Guests aboard the vessels contribute to longitudinal datasets on population health, migratory timing, and behavioral patterns, with each sighting logged into databases shared across European marine research networks. The waters off Horta host resident populations of common and bottlenose dolphins year-round, while sperm whales, fin whales, and sei whales traverse the channel between Faial and Pico from spring through autumn. Blue whales, the largest animals ever to exist, appear sporadically in deeper offshore zones during summer months. The research expeditions focus on non-invasive observation protocols: no chasing, no crowding, and strict adherence to approach distances mandated by Azorean marine protection law. Hydrophones capture vocalizations underwater, allowing passengers to hear the clicks of hunting sperm whales or the whistles of dolphin pods in real time. Naturalist Science & Tourism Whale Watching Horta tours emphasize species identification, behavioral ecology, and the broader context of Atlantic biodiversity, with briefings before departure and debriefings upon return. The base laboratory at Cais de Santa Cruz serves dual roles: a staging area for expeditions and a public education space displaying baleen plates, cetacean skulls, and photo-identification catalogs of individually recognized whales. Visitors can examine research equipment, review sighting maps, and ask biologists about ongoing studies before boarding. The station operates daily from early morning through mid-afternoon, aligning departure windows with peak cetacean activity and favorable sea conditions. Each expedition lasts approximately three hours, with distance and route determined by real-time spotter reports relayed from coastal lookout stations — a traditional Azorean whaling infrastructure now repurposed for conservation. The approach merges Faial's maritime heritage with contemporary marine science, offering naturalist-led whale watching that prioritizes animal welfare and ecological literacy over entertainment alone.