DID you know that crabs off the Tasmanian coast live for 100 years but baby seahorses have little chance in the wild?
Those are a few of the facts on offer at a discount rate this spring as part of a program to unlock secrets of the state's marine environment.
The federal and state governments have teamed with the University of Tasmania to present Inspiring Australia.
Tasmanians have cut-price access to marine experiences across the state, including cruises and aquarium displays, until November 30.
Stanley Seaquarium manager Diane Charles said the aquarium complex on the Stanley wharf, owned by the business Stanley Fish, had live and static displays.
Mrs Charles said among the live animals was a Tasmanian giant crab. These creatures are found in deep water off the continental shelf and could live for a century and weigh almost 20 kilograms.
Seahorse World is at Beauty Point and tour guide Lani Kittel said visitors were taken by the gracefulness of the small creatures.
She said the centre bred ornamental seahorses that were exported globally and it was a world leader in seahorse breeding.
Baby seahorses have a 3 per cent chance of reaching adulthood in the wild, but the success rate at the farm is 95 per cent.
Maria Island Ferry and Eco Cruises co-owner John Cole-Cook said the East Coast island was World Heritage listed.
It offered bushwalking, diving, climbing, wildlife spotting and convict buildings.
He said it was on the map more than a century before Captain Cook claimed Australia for Britain in the late 1700s, as Dutch sailor Abel Tasman visited and mapped the island in 1642.
Other participants are: Bicheno Glass Bottom Boat, Bruny Island Cruises, East Coast Cruises at Triabunna, Gordon River Cruises, Lady Nelson in Hobart, Peppermint Bay Cruise in Hobart and Tasman Island Cruises at Port Arthur.