Pictures of my Coralline Rock, second set

[Thumbnail picture] In the center of the photo is a very small instance of the "mystery" snails. It's crawling on the glass.
[Thumbnail picture] The same snail has now moved onto the rock in the foreground.
[Thumbnail picture] A colony of four stony corals living on the rock with the leafy coralline algae.
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picture] The same rock, from a location slightly to the left of the previous photo. You can see small fern-like creatures living on the rock. I don't know if these are a type of feather duster, or a type of gorgonian. I have a lot of them, whatever they are.
[Thumbnail picture] View from the left end of the tank, showing some snails or crabs, and one of the coral colonies.
[Thumbnail picture] The first of a sequence of shots of the largest of the "mystery" snails. The snail's siphon and body are white with black dots all over it. The tip of the siphon and the rim of the body are yellow.
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picture] Rock with corals, this time well extended. The surge device was not connected in all pictures prior to this one, and it is connected from here on. Many of the pictures that follow show small bubbles in the water.
[Thumbnail picture] Feather duster that came with a rock.
[Thumbnail picture] The surge device fills the water with bubbles once every 45 seconds.
[Thumbnail picture] Nice shot of my favorite rock, the one with the leafy wine colored coralline algae.
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picture] Rock with clam/mussel, a hermit crab, an encrusting sponge, and an urchin. The urchins came with the rock and sand, and I remove them as I see them.
[Thumbnail picture] Another shot of the large "mystery" snail.
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[Thumbnail picture] Closeup of a new type of mystery snail. This sucker moves fast!
[Thumbnail picture] The first shot in a sequence capturing a feeding frenzy. A golf ball shaped shellfish at the base of the displayed rock died. It may have died on its own, but I suspect that one of the mystery snails killed it. Hermit crabs picked loose flesh from the opening of the shell.
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picture] The large mystery snail has positioned his body parallel with the opening of the shellfish. It looks like the snail isn't doing anything. However, when I shined a flashlight into the opening of the shellfish, from below, I saw a long (1-2 inch) pink tongue like thing belonging to the snail. It would wave around inside the shellfish. When I shined the light on it, the appendage would retract into the snail. It's obvious that the snail was eating the shellfish.
[Thumbnail picture] Large isopod in my chiller. The pipes you see are the copper pipes of a window air conditioner that I have coated with epoxy and encased in a watertight acrylic box.
[Thumbnail picture] View from the right end of the tank as the surge device makes the water opaque with small bubbles. Don't ask me where that lightning bolt came from.
[Thumbnail picture] Closeup of a baby stony coral that came on the rock. The tentacles on this type of coral are transparent with brown dots in them.
[Thumbnail picture] Closeup of a different type of stony coral the came on the rock. The tentacles on this type of coral are transparent with white dots in them. I suspect that this coral is ahermatypic, because I have several small colonies growing on what was clearly the underside of a rock (it lacks any algae growth).
[Thumbnail picture] Closeup of the large mystery snail.
[Thumbnail picture] Another one.