diff --git a/src/main.rs b/src/main.rs
index 2eee8d9..92c8c00 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -37,6 +37,7 @@ use crate::systems::life;
 
 pub const ARENA_HEIGHT: f32 = 1000.0;
 pub const ARENA_WIDTH: f32 = 1000.0;
+pub const LIFE_FORM_SIZE: f32 = 150.0;
 
 fn initialise_lifeforms(world: &mut World) {
     //// 3d tetra
@@ -70,15 +71,14 @@ fn initialise_lifeforms(world: &mut World) {
     let mut transform = Transform::default();
 
     //set size of tetrahedrons
-    let life_form_size = 150.0;
-    let scale = Vector3::new(life_form_size, life_form_size, life_form_size);
+    let scale = Vector3::new(LIFE_FORM_SIZE, LIFE_FORM_SIZE, LIFE_FORM_SIZE);
     transform.set_scale(scale);
 
     //render some tetrahedrons!
     for x in 1..5 {
         for y in 1..5 {
             for z in 1..5 {
-                transform.set_translation_xyz(life_form_size * x as f32, life_form_size * y as f32, life_form_size * z as f32);
+                transform.set_translation_xyz(LIFE_FORM_SIZE * x as f32, LIFE_FORM_SIZE * y as f32, LIFE_FORM_SIZE * z as f32);
                 let translation = transform.translation();
                 // Create a life form entity.
                 world
diff --git a/src/systems/life.rs b/src/systems/life.rs
index 9245511..2e6aa87 100644
--- a/src/systems/life.rs
+++ b/src/systems/life.rs
@@ -38,7 +38,7 @@ impl<'s> System<'s> for LifeSystem {
             if &name.name[..9] == "Life Form" && (entities_count < 2 || total_entities-entities_count<3) {
 
                 let mut transform_new_life = transform.clone();
-                transform_new_life.append_translation_xyz(0.0, 0.0, -15.0);
+                transform_new_life.append_translation_xyz(0.0, 0.0, -crate::LIFE_FORM_SIZE);
 
                 lazy_update.exec(move |world| {
                     //loading tetra mesh