Use your boost to emit a blast which slows any animal it hits.
The Cachalot is a Greyish, "Fish" in Deeeep.io, It is one of the Last Animals in the Game, it's Rival is the Giant Squid. It can slow down animals. It has to breathe. It can also go to the deep sea or arctic. It is equivalent to Killer Whale , Whale , Shark and Giant Squid. It is the one of 2 animal that can survive in all three biomes.
As a Cachalot Edit
Slow down animals to make it so you can kill them. Try killing the Giant Squid, but be careful to make sure you have enough oxygen.
Against a Cachalot Edit
Try boosting, Cachalots are slow, use your boost to escape it. Otherwise you will be killed. Against it, this is the best strategy - just make sure you don't get caught in it's ability.