TM28 Dig in Emerald.

Dig. A TM is used up when taught; one copy, one Pokemon. 158 species in Pokemon Emerald can learn it.

Charmander, Charmeleon, Charizard, Squirtle, Wartortle, Blastoise, Rattata, Raticate, Ekans, Arbok, Pikachu, Raichu, Sandshrew, Sandslash, Nidoran (female), Nidorina, Nidoqueen, Nidoran (male), Nidorino, Nidoking, Clefairy, Clefable, Vulpix, Ninetales, Jigglypuff, Wigglytuff, Paras, Parasect, Diglett, Dugtrio, Meowth, Persian, Psyduck, Golduck, Mankey, Primeape, Growlithe, Arcanine, Poliwag, Poliwhirl, Poliwrath, Machop, Machoke, Machamp, Geodude, Graveler, Golem, Slowpoke, Slowbro, Grimer, Muk, Onix, Krabby, Kingler, Cubone, Marowak, Lickitung, Rhyhorn, Rhydon, Kangaskhan, Pinsir, Eevee, Vaporeon, Jolteon, Flareon, Kabuto, Kabutops, Mew, Cyndaquil, Quilava, Typhlosion, Totodile, Croconaw, Feraligatr, Sentret, Furret, Ledyba, Ledian, Spinarak, Ariados, Cleffa, Igglybuff, Marill, Azumarill, Sudowoodo, Politoed, Aipom, Wooper, Quagsire, Espeon, Umbreon, Slowking, Pineco, Forretress, Dunsparce, Gligar, Steelix, Snubbull, Granbull, Shuckle, Heracross, Sneasel, Teddiursa, Ursaring, Swinub, Piloswine, Corsola, Hitmontop, Raikou, Entei, Suicune, Larvitar, Pupitar, Tyranitar, Treecko, Grovyle, Sceptile, Torchic, Combusken, Blaziken, Mudkip, Marshtomp, Swampert, Poochyena, Mightyena, Zigzagoon, Linoone, Seedot, Nuzleaf, Shiftry, Nincada, Ninjask, Shedinja, Makuhita, Hariyama, Skitty, Delcatty, Sableye, Aron, Lairon, Aggron, Numel, Camerupt, Spinda, Trapinch, Vibrava, Flygon, Zangoose, Seviper, Corphish, Crawdaunt, Baltoy, Claydol, Anorith, Armaldo, Kecleon, Regirock, Groudon