First,I'd like to give a big thanks to Matastig for telling me about this game that is due out next year,named 'The Big Blue'.
It's being developed by the team who developed the Ecco the Dolphin games.It will allow you to explore fully 3D and detailed underwater ocean environments and just like in the Ecco games there will be quests and puzzles and you'll encounter dangerous sea life.The Big Blue underwater world is supposed to be much bigger than Ecco Defender of the Future(which is the only 3D Ecco game that was released).
Besides dolphins you can control whales as well as creatures that have evolved millions of years in the future(because this game's story takes place millions of years in the future after humanity is gone and after an alien invasion),and some of the creatures have evolved in unique ways such as creatures that have evolved from chemical reactions with plastic trash in the ocean,as well as ginormous creatures which make whales look small as well as sea-dragons which can fly above the water,which can dive to depths that no other creatures can but they're extremely rare and you can play the game for months without seeing one.
The game will also have a collector card system which will show at least one picture of the animal and will have information about the creature and some of the creature cards will allow you to spawn creatures and some creature cards are very rare and you can trade creature cards with other players.
The game has been announced for Mac, Windows, Linux, and iOS and Android but it could come to SONY,Microsoft and Nintendo consoles.
The game has multiplayer too.
I am excited about this game because I'm a big fan of Ecco Defender of the future,I loved exploring it's beautiful underwater environments and I loved how artistic and detailed it was,for example in the shallower waters you would see sandbeds and the water would be a beautiful light blue from the sunlight penetrating but the deeper you got it became more dark and you could explore caves and communicate with other sea creatures and explore underwater strucutures made by civilzations as well as go on quests and fight against sharks and aliens.There was other details it had that made it's ocean environment feel so alive such as seeing schools of fish swimming around and seeing underwater vegetation and coral.
It makes me exciting The Big Blue is supposed to be a huge underwater world,it's the type of sandbox game that makes me excited when I think about exploring it's world.
The Big Blue is not a sequel to any of the Ecco games although it has lots of similarities.
Ecco Defender of the Future's music and underwater sound effects gave a beautiful sense of calmness and tranquility,I hope The Big Blue can do the same.
A link for where I go the info from that also has footage of the game and CGIs for the game.
EDIT:Unfortunately,for the game to go into development it needs over 600 000$ to be raised in the next 20 days and so far only 40 000$ has been raised.