Record (Lizard Island Field Guide)

Record details

Smooth Giant Clam (species: Tridacna derasa)
Observed by Andy Lewis
Sat, 8 Jul 2017 02:38:00

Location details

  • Lizard Island, Queensland

  • Clam Garden. The specific site (~16,000 square metres) is appproximately the inshore half of the entire reef.

  • Marine specimens found at a depth between 0 m and 3 metres.

Details about the specimens

  • 17 specimens. (exact)
  • specimens alive when found.
  • specimens alive at end of the observation process.
  • specimens left in natural environment.
  • The record does not indicate whether reproduction was occurring.

Population had decreased from 26 to 17 live clams since comparable survey in 2009. Recruitment had occurred with smallest specimen 9 cm long and 5 individuals less than 20 cm.