If you want a cool-toned knife without neon gradients or meme-tier flex, Clear Waters (澄澈之水) is one of the quieter hydro options in the knife pool. Valve’s one-liner fits: blue camo over the blade. No lore dump—just pattern placement, wear, and whether your inspect actually matches the listing.

Quick specs (confirmed)

| Item | Detail |
|------|--------|
| Slot | Knife |
| Finish | Clear Waters (hy_ocean_knife_90) |
| Rarity | Rare |
| Method | Hydrographic |
| Wear cap | 0.0 – 0.5 |
| Drop context | 2021-09-21, Operation Riptide |
| Designer | Valve (official finish, not community) |

Hydro means same name, different blue camo layout. Satisfaction often beats the sticker price once you find a template you like.

Inspect checklist before you pay

1. Spin the play side — camo blocks on spine, tip, and handle area matter more than “FN vs MW” on paper.
2. Compare listing screenshots to in-game inspect — hydro knives love the “pretty screenshot, dull template” trap.
3. Set a wear floor — at 0.5 max, high wear shows edge and face wear fast; low wear reads cleaner on camo edges.
4. Pairing — navy/black gloves and minimal blue rifles usually sync without fighting the knife.

Wear tiers (practical)

• Low end of range: Sharper camo edges, less metal showing through busy areas.
• Mid: Still usable if the pattern lands where you care; check tip and spine first.
• Upper band: More blade “gray” and edge wear; only worth it if the template is a personal grail and the discount is real.

Shopping verdict

Buy if: You’ve seen the exact inspect (or trust the seller’s live inspect link), you like blue camo that’s clean not loud, and you’re pricing it as Riptide-era stock—supply and mood matter more than hype cycles.

Pass or wait if: You need a fixed pattern every time (hydro won’t cooperate), you only judge from one marketplace thumbnail, or you’re paying a premium for “operation story” without checking template quality.

Where to hunt: C5GAME and Steam Community Market—filter by wear, open inspect, then decide. No complex narrative here; date, method, wear, your eyes do the work.

Editor’s aside

Riptide dropped this in September 2021, so it’s had time to settle. That’s good for buyers: fewer “day-one” fairy tales, more pattern lottery honesty. I’d rather overpay slightly for a spine I love than save cash on a tip that looks washed out—on a hydro knife, template > float brag almost every time.