To tame one, you have to get a Crabsnake egg and place it in that hatch. After about 3 ingame days, the Crabsnake will hatch. It will treat the base like a Jellyshroom, and an Alien Containment can be attached to the hatch and modified to resemble a Jellyshroom for aesthetic purposes.

UPDATE (5 Sep 2016): Subnautica will be a single-player game only, and will not receive multiplayer.

It is possible to temporarily placate a Stalker by feeding them any kind of catchable fish. Doing this will pacify the creature for a short while, however this behaviour is temporary and the Stalker will soon resume its normal, aggressive behaviour.

The Reaper Leviathan is capable of inflicting 80% damage on the player if attacked outside their vehicle. The Reaper Leviathan has been observed to grab a Seamoth and a Prawn Suit and smash it down to the seabed, destroying it completely afterward.

Long story short, I’ve been down here for hours. I’ve shot the thing with the Statis Rifle and gotten hundreds of hits in with the Thermoblade, but the dragon just won’t die.

Sea Dragon Leviathan

If the player enters the Crater Edge, a single adult Ghost Leviathan spawns in. Despite being much smaller than the Sea Emperor Leviathan, the Ghost Leviathan’s eggs can be far larger, capable of growing to sizes far too large for the creature to lay, suggesting that the eggs can grow after being laid.

[WARNING: Reaper Leviathan will still attack THE SEAMOTH AND P.R.A.W.N. Suit In CREATIVE MODE!]

Reapers used to be very broken and dangerous. Now they’re mostly bugged and keeping your distance makes them more or less a scary background noise.

So if that wasn’t enough here is a story once when I was driving in my seamoth a reaper leavithan was literally 2 meters away but it did not even notice me.

Creative Mode The player cannot die and does not have to worry about health, oxygen, hunger or thirst.

In the deep undersea world of Subnautica, it’s impossible to keep away from the alien bacterial infection known as Kharaa. Brought to the planet by the Precursors, the Kharaa bacteria is known to be responsible for the deaths of 143 billion sentient beings since its discovery.

THERE’S NO AUTOSAVE?! Or if there is, it doesn’t trigger by default. So so so gutted 🙁 Every game with auto-save tells you during the splash screen what happens when it saves.