Common Musk Turtle
Sterotherus odoratus
Size: to 4.5"
Habitat: in and around water
Notes: Also known as 'Stinkpots'. Often bad-smelling, sometimes snappy, and a nimble climber. Occasionally, this little turtle is even found in trees.
Building artificial reefs is a lot more than just throwing junk in the ocean. The material needs to meet standards for cleanness and suitability, and it needs to end up where it is intended, and not somewhere else. Concrete and stone are easy, as they go straight down wherever they are dropped.
More: How to Make a Reef ...