On this page of the Valheim guide, you will find information about the Ocean, one of the biomes found in the game. You will learn more about the resources and enemies found here.
The Ocean is the most arid of all biomes. With few exceptions, it is only used to travel between islands. Of course, this does not mean that it is 100% safe.
The only source of raw materials in the Ocean is Kraken. It's a huge, neutral, turtle-like creature. Only the part with the shell is above the water surface. It resembles a small circular island, devoid of tall vegetation. You can get on it without a problem. Hitting it with a pickaxe will extract chitin. However, you must keep in mind that after a hit, the creature will start to dive.
The main threat you face in the Ocean is Serpent. This is a sizable water snake that you may come across while sailing. It deals a lot of damage – the creature can easily destroy your boat. In order to eliminate the opponent, you must use the bow. However, it will still be quite a challenge - this enemy has a large number of life points.
However, if you get defeated by the Serpent, you will have a chance to recover your gear. There is a small chance that the enemy will be near the spot where you died.