yes in Route 19
Rarity:Swarm
To get Clamperl you need to listen to Prof. Oak's radio show and they will announce a Pokemon that is swarming around a route you just need to wait until they say Clamperl is swarming around Route 19.
You can't catch Deoxys in the wild or a special place. But if you got it in Pokemon FireRed, LeafGreen, Sapphire, Ruby, or Emerald you can migrate Deoxys in the Pal Park in the Kanto region in Fuchsia City.You cannot obtain Deoxys legitimately in Pokémon SoulSilver. You must take advantage of an Event in Pokémon Emerald, FireRed, or LeafGreen to go to Birth Island using an Aurora Ticket, and catch it there, then use the Pal Park to transfer it to SoulSilver. Alternatively, you can cheat.
To catch a Metapod in Pokemon SoulSilver (And in Pokemon HeartGold as well), you have to enter the Bug Catching Contest at The National Park on Tuesdays, after you obtain the National Pokedex.
You need to transfer Kyogre over from Pokemon Emerald/Sapphire, or trade Kyogre to your game from Pokemon HeartGold. If you trade the Kyogre to your game from HeartGold, you can talk to Professor Oak with the two of them in your team to get the Jade Orb, allowing you to catch Rayquaza where you found the other two.
No, there are no underwater routes in Pokemon HeartGold or SoulSilver. The HM Dive is not available in Pokemon HeartGold or SoulSilver.
Yes, you can catch the Spiky-eared Pichu in the English versions of Pokémon HeartGold and SoulSilver however you need access to the Gamestop or Wi-Fi Pikachu-colored Pichu distribution in order to gain access to the Spiky-eared Pichu.
You can't catch bastiodon in Pokemon soulsilver.
Gorebyss is an evolution of Clamperl. If you trade it while it holds a DeepSeaScale, it evolves into Gorebyss.
catch it? no.
Catch Clamperl, Chinchou and Relicanth most of these Pokemon hold shards
You cannot catch Heatran in Pokémon SoulSilver, you will have to trade for it.
No, you can not catch Phanpy in SoulSilver. It is a version exclusive to HeartGold.
You cannot catch Celebi in Pokemon Soulsilver, you have to transfer it from Diamond and Pearl (if you have it in those games).
you trade
No.
No.
You can use any type of Poke Ball that you want to catch Spheal in Pokemon SoulSilver.
there is a mew in Pokemon soulsilver but you need to catch all leadndery Pokemon including event Pokemon