Terrain refers to structures or plant life of sorts, that are typically (with a few exceptions) randomly generated and are part of the standard map. Terrain usually provides some sort of purpose that affects the gameplay in some way shape or form, but in some cases are just purely cosmetic decoration.
Hiding places
Hiding Places are terrain that can be hidden in by animals for protection. Not all animals can hide in all terrain though.
| Name | Summary | Image |
|---|---|---|
| Anemone | Generates on the ocean floor. Tier 1 to tier 3 animals can hide here. | 
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| Beaver Dam | Generates between the ocean and its surface, and the swamp and its surface. Beavers and Ducks can hide here. Orange food pieces grow on its roots. Slowly landing on the top allows you to walk across it. (As an animal that can walk). | 
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| Bush | Generates atop islands. Crabs can hide here. Berries spawn here. | 
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| Tree | Generates atop islands. Reaching the top of a tree requires that you boost, fly, or be pushed to the top. Seagulls can hide here. Snakes can climb and hide here. Apples and coconuts grow on its leaves. | 
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| Igloo | Penguins and Seals can hide here. Appear upon ice caps | 
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| Volcano | Generates on the arctic and deeeep floors. Produces volcano food, which can be eaten. Tier 1 to tier 3 animals can hide here. | 
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| Shipwreck | One shipwreck always appears on one of the dirt islands that border the ocean and deeeep. Tier 1 to tier 8 animals (and hammerhead) can hide here. Produces bubbles that can be eaten, eating one restores a bit of oxygen for animals who lose oxygen underwater (Seagull, Beaver, Pelican, and Sea Turtle for example.). | 
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| Broken tree | Generates on the swamp floor. Tier 1 to tier 3 animals and electric eel,snake can hide here. | 
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Platforms and obstacles
Platforms and obstacles are terrain that cannot be hidden in (excepting Polar Bears and Stonefish) but can still be interacted with (i.e. walking on it or being unable to pass through it).
| Name | Summary | Image |
|---|---|---|
| Island | Generates between the ocean and its surface. Platform for walking. Bushes and trees appear on here. | 
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| Glacier | Generates between the arctic and its surface. Platform for walking. Igloos can appear here. Getting onto a glacier requires that you boost, fly, or be pushed atop it. | 
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| Swamp island | Generates between the swamp and its surface. Platform for walking. Swamp trees appear above and roots appear below swamp islands. | 
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| Waterfall | Does not generate randomly, one waterfall always generates at the entrance to the upper level of the swamp. Pushes any animals and food that enter it downward and left.
Only animals tier five (Seagull Tier) and above can swim up the waterfall. |
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| Swamp tree | Generates atop swamp islands. Snakes can climb and hide in swamp trees. | 
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| Lily pad | Generates between the swamp and its surface. Platform for walking. | 
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Cosmetic terrain
Cosmetic terrain are terrain that cannot be interacted with and have no effect on the gameplay whatsoever.
| Name | Summary | Image |
|---|---|---|
| Cloud | Generates at the height limit of the ocean surface and the arctic surface. | 
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| Roots | Generates underneath swamp islands. | 
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| Jagged logs | Generates on the swamp floor. | 
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History
This section highlights all the changes made to terrain in documented updates so far. A full changelog can be found here.
| Update | Changes |
|---|---|
| Pre-November 4th, 2016 (Release) | Added 1 form of terrain: anemone. |
| November 4th, 2016 | New animal (beaver) and a new hiding place: beaver dams. |
| November 5th, 2016 (Night) | Added a new food source below beaver dams. |
| November 24th, 2016 | Added islands, bushes (which crabs can hide in) and trees! |
| January 21st, 2017 | Glaciers now have igloos, which penguins can hide in. |
| February 13th, 2017 | Island sizes are now random (between 1x and 3x previous standard size of islands). |
| March 13th, 2017 (Beta) | Added a new shipwreck hiding spot (designed by Pathos too!) |
| March 14th, 2017 | Added air bubbles leaking from shipwreck (h1637727's idea[1]).
Jellyfish and below can now hide in volcanoes. |
| March 17th, 2017 | An Abandoned House appeared in the deep sea. It's said its owner left long ago, after it was attacked by a giant squid and its pet was eaten.
(FROM BETA) Added one new hiding place (shipwreck designed by Pathos too!) |