There is a total of 150 crystals to find. Since there are no levels or checkpoints, I have broken the map down into areas around the telerouters. I recommend unlocking all of your abilities to get the glider and the crystal locator. The locator will add a signal bar in the bottom right-hand corner that fills up as you get closer to a crystal.
Below, I've included a list of the 29 telerouters that I use, the number of crystals found in each area, and the timestamp to find it all in the video. Please, let me know if you have any questions or if you find a mistake.
Happy Hunting!
List of Telerouters:
*** Spoiler - click to reveal ***Champoline Meadows: #1-20 (0:15)
Fungi Fields: #21-22 (12:07)
Champoline Hill: #23 (13:11)
Bouncellop Island: #24-32 (13:52)
Funghigh Lookout: #33-34 (19:52)
Clactus Cove: #35-46 (20:52)
Spiny Spire: #47-51 (28:48)
Beach View: #52-55 (31:40)
Windy Watchtower: #56-60 (34:04)
Clactus Crater: #61-72 (37:02)
Echo Cavern: #73-76 (44:11)
Shygrass Swamp: #77-80 (46:28)
Flooded Caves: #81-84 (48:42)
Glowleaf Glade: #85-87 (50:39)
Cascade Peak: #88-89 (52:26)
Scattered Spire: #90 (53:22)
Overgrown Oasis: #91-99 (53:48)
Vineland: #100-107 (58:46)
Sporchid Valley: #108-110 (1:03:58)
Rocky Steps: #111 (1:05:32)
Sub-Zero Summit: #112-115 (1:06:20)
Shattered Island: #116-117 (1:08:37)
Icicle Arch: #118-122 (1:09:35)
Frozen Plateau: #123-126 (1:12:07)
Frozen Lake: #127-132 (1:14:14)
The Summit: #133-136 (1:17:29)
Path to the Moon: #137-147 (1:19:48) ◄Not a Telerouter. This includes the mountain on the ground and all of the islands that lead up to the Moon.
The Moon: #148-149 (1:27:15)
Outer Asteroids: #150 (1:28:19)