void SpawnSwimmers()
{
Quaternion spawnRotation = Quaternion.identity;
shuffle(spawnValues);
shuffle(colours);
for (int i = 0; i < diffCount; i++)
{
Material color = colours[i];
Vector3 spawnPosition = spawnValues [i];
GameObject newSwimmer = Instantiate(swimmer, spawnPosition, spawnRotation);
newSwimmer.GetComponent <ColourGenerator>().SetSwimmerColour(color);
swimmers.Add(newSwimmer);
Vector3 decoyPosition = spawnValues[i + diffCount];
GameObject decoySwimmer = Instantiate(swimmer, decoyPosition, spawnRotation);
ColourGenerator cg = decoySwimmer.GetComponent <ColourGenerator>();
cg.SetSwimmerColour(color);
cg.RemoveShark(false);
swimmers.Add(decoySwimmer);
}
swimmersSpawned = true;
}