The Spencer Dock Bridge in the city's docklands has been drawn up in collaboration with Arup for the Dublin Docklands Development Authority and the Rail Procurement Agency.
The bridge - dubbed the Manta Ray - will have space for two tram and car lanes as well as pedestrian and cycle paths on the edges 'which widen and step down to the water'.
Describing the design, a spokesman for the practice said: 'The white concrete structure is almost as wide as it is long and is supported at mid-span due to site constraints and the deck being only 600mm thick in some sections.
'When finished, the bridge will be vibrantly lit at night to give it a high visibility against the deep canal water.'
The sea creature-like structure is the second Future Systems design in recent months to take its inspiration from the world beneath the waves. The practice's competition-winning design for Prague Library was also said to have been inspired by underwater creatures (Future Systems wins its first-ever Czech scheme).
The tendering process for the construction of the bridge will commence in June and work is expected to start on site in autumn this year.