So, apparently this achievement is a bit of a mess. Seems to be wildly inconsistent in what is or isn’t needed, in a storm or not, on land or not, on the boat or in your pockets.
My biggest concern for us console users are the raft size limitations. Can a person even sail a 5x4 raft with all the large animals on it? Seems to me this achievement is designed for failure, it was implemented long before giant exploding crabs and aggressive boars where added to the game, and without regard to the limitations the game engine has for console users. Sure, if consoles could make an 8x5 raft, this wouldn’t be an issue as I’ve seen rafts like that carry two other rafts at the same time. Now I have seen smaller rafts carry sharks so I suppose it’s doable.
Sometime the flowers through the weeds aren’t easily spotted.
3x3 raft, with middle piece with no floor creates a small pit, Helps transfer animals corpse to main island.
Place raft on land, and 2 of each of required animals on raft. Wait for a Storm (A Storm, not just rain) Hop on raft (I clicked the rudder) and… bam. Easy. XD
I had 3x3 with 2 side panels, which helped with balance, you can sail with it. Having middle section missing a floor. (Floater part type don’t matter, nothing can fall thru holes of tire etc)
A Storm however will rock it and you’ll lose most of animals.
It possible if you get how balance/water works. But ya, its much easier to just keep bodies on an island you live on and wait for it. (kept snakes on roof, since they tend to spawn standing on tails, and clip thru ground otherwise)