Every so often, Moshi Monsters will release new moshlings in the game that you can capture and put in your zoo.
To this day, there are well over 100 moshlings released in the game today. Some moshlings are way easier to capture than others because of their rarity.
Moshlings are broken down into several different categories including common, uncommon, rare and ultra rare.
The ultra rare Moshlings are very hard to capture and are most likley require something other than a simple seed to get it.
There are also several different ways you can capture moshlings including planting seeds in the garden, completing Super Moshi Missions, Moshling Star Rewards, Moshling Eggs, Moshi Monsters codes, daily prize quests and other competitions and prizes.