A jellyfish which lives upside down in order to use its tentacles (the green tentacles) to photosynthesise.
Left: Tropical marine environment | Right: Very grumpy looking fish
Weedy sea dragons are exceptional at blending in with their surrounding environment.
A red and white (football supporting!) crustacean.
Illuminated moon jellyfish.
Hermit crab in hiding.
The mysterious Giant Cuttlefish!