We track 2 dive operators in Western Port Bay Side. 1 teach certification courses (1 PADI). 2 run snorkelling trips. Listings are ordered by Fin Rank: a published score for how complete and verified each listing is.
Ocean Adventures Phillip Island offers a range of water-based activities including jet boat tours, thundercat tours, guided snorkel tours with sea scooters, and PADI Discover Scuba dives. They emphasize environmental responsibility and cater to individuals, couples, families, and groups. Tours depart from San Remo Jetty.
Diveline Scuba Centre is a sporting goods store located in Frankston, Victoria, that appears to offer diving-related services. They have a high Google rating and are open six days a week. The store is wheelchair accessible.
Which centres run each site, named on their own websites or confirmed by the owner.

Fin lists 2 dive operators in Western Port Bay Side. 1 of them run certification courses.
PADI is the most common agency (1 centre).
2 of the 2 operators we track run snorkelling tours.
Operators are sorted by Fin Rank, a 100-point profile strength score: contact details, what they offer, the dive sites they run, their Google reputation, whether the owner has claimed the listing, and whether their own website links to Fin. 0 listings here are owner-verified. The formula is published in full on the Fin Rank page.