Marine and boating
Weather reports: http://www.weatherzone.com.au/marine/vic
Maritime licencing: http://www.transportsafety.vic.gov.au/maritime-safety/recreational-maritime/marine-licence
Boating Victoria: http://www.boatingvictoria.com.au/
Diving
http://www.divingvictoria.com.au/
http://www.divevictoria.com.au/
http://scubadivevictoria.com.au/
Fishing/Fisheries
Department of Primary Industries: http://www.dpi.vic.gov.au/fisheries
Recreational fishing guide: http://www.dpi.vic.gov.au/fisheries/recreational-fishing/recreational-fishing-guide
Licence: https://checkout.payments.com.au/dpi_fishing/
Victorian Recreational Fishing Peak Body: http://vrfish.com.au/
National Parks
Vic National Parks Association (VNPA): http://vnpa.org.au/page/nature-conservation/marine-and-coastal
Education/resources
Fishes of Australia: http://www.fishesofaustralia.net.au/
Museum Victoria: http://museumvictoria.com.au/marine
Port Phillip Bay Marine Life: http://portphillipmarinelife.net.au/
Atlas of Living Australia: http://www.ala.org.au/
OZCAM (Online Zoological Collections of Australian Museums): http://www.ozcam.org.au/
Other
Reef Watch Victoria: http://www.reefwatchvic.asn.au/
Field Naturalists Club of Victoria Inc.: http://www.fncv.org.au/