Community members have come forth with a substantial amount of information about two Australian snub-fin dolphins found dead at Toolakea Beach north of Townsville two weeks ago.

It follows an appeal for information from the Great Barrier Reef Marine Park Authority (GBRMPA) after the animals were found, tied to a rope and weighed down by concrete at Two Mile Creek.

GBRMPA Field Management Director Mick Bishop said this information from the community would be used to assist with the investigation and help target future patrols.

"There has been a lot of interest in this incident and we appreciate community members responding to our appeal for information," he said.

"All valid leads that we receive will be used to assist with our investigation.   

"The Great Barrier Reef Marine Park belongs to everyone and we all have a role to play in protecting its plants, animals and habitats.

"Members of the community who are out on the water are important eyes and ears for us and can help by reporting any illegal activities taking place.

"We would like to thank the community for the information provided and encourage anyone else with information to come forward."

The animals were found by a recreational fisherman on 23 May 2011 and reported to the Queensland Parks and Wildlife Service.

Inhabiting the inshore waters of northern Australia, snub-fin dolphins are rare and are listed as 'near threatened' under Queensland law.

They face a number of threats, particularly from habitat loss, netting and coastal development.

Anyone with information should contact the Great Barrier Reef Marine Park Authority on (07) 4726 0588.