Seeing what lives in the stuff that occupies 70% of the surface of the Earth. 

1- Upside- down jellyfish, possibly the most entertaining tank to watch. 

2- The friendliest fish I’ve ever met.

3- At the right angle,  you can see right through this fish’s eye.

4- A family of clownfish.

5- A common lobster I think. Maybe a rock lobster… I’m not sure.

6- An urchin

7- The underside of a Crown of Thorns starfish

8- A blind Loggerhead turtle (with epilepsy) that has a flattened shell due to the fact it keeps bumping into things in the tank. This means the coral in this tank are fake to stop it hurting itself on sharp edges.