diff --git a/gym_puddle/envs/puddle_env.py b/gym_puddle/envs/puddle_env.py
index 2752ca4..832c178 100644
--- a/gym_puddle/envs/puddle_env.py
+++ b/gym_puddle/envs/puddle_env.py
@@ -25,14 +25,14 @@ def __init__(self, start=[0.2, 0.4], goal=[1.0, 1.0], goal_threshold=0.1,
         for i in range(4):
             self.actions[i][i//2] = thrust * (i%2 * 2 - 1)
 
-        self._seed()
+        self.seed()
         self.viewer = None
 
-    def _seed(self, seed=None):
+    def seed(self, seed=None):
         self.np_random, seed = seeding.np_random(seed)
         return [seed]
 
-    def _step(self, action):
+    def step(self, action):
         assert self.action_space.contains(action), "%r (%s) invalid"%(action, type(action))
 
         self.pos += self.actions[action] + self.np_random.uniform(low=-self.noise, high=self.noise, size=(2,))
@@ -55,14 +55,14 @@ def _get_reward(self, pos):
     def _gaussian1d(self, p, mu, sig):
         return np.exp(-((p - mu)**2)/(2.*sig**2)) / (sig*np.sqrt(2.*np.pi))
 
-    def _reset(self):
+    def reset(self):
         if self.start is None:
             self.pos = self.observation_space.sample()
         else:
             self.pos = copy.copy(self.start)
         return self.pos
 
-    def _render(self, mode='human', close=False):
+    def render(self, mode='human', close=False):
         if close:
             if self.viewer is not None:
                 self.viewer.close()