What Pokemon can go through whirlpools in Crystal?

You can't actually "go through" whirlpools in Pokemon Crystal. Whirlpools are obstacles in certain areas, and you need specific Pokemon with the Surf move to cross them.

Here's how it works:

* Whirlpools: They block your path.

* Surf: A move that allows you to traverse water.

* Pokemon that learn Surf: Many Pokemon learn Surf, but some of the common ones include:

* Squirtle: Learns Surf at Level 38

* Wartortle: Learns Surf at Level 38

* Blastoise: Learns Surf at Level 38

* Psyduck: Learns Surf at Level 36

* Golduck: Learns Surf at Level 36

* Lapras: Learns Surf at Level 42

* Gyarados: Learns Surf at Level 58

Note: The specific Pokemon you need for each whirlpool might vary depending on the area you're in, so be sure to check your Pokemon's move set.