After the Cyrene Reef trip in the morning, I rushed off to another island. The beautiful St. John's Island for the Bivalve Workshop.
Today, Dr Tan Koh Siang of the Tropical Marine Science Institute is sharing more about some bivalve groups during the Workshop: Introduction to Tropical Bivalves. He shared a lot and I can only highlight some of what I found particularly interesting.
first Mega Marine Expedition in March.
Mangrove jingle shells (Enigmonia aenigmatica) had eyes too! They stick onto leaves so it's not certain what these eyes are used for. Some other bivalves even have eyes with a lens, cornea and retina!
'see ham' or blood cockles (Anadara sp.).
T-shaped ones that resemble a hammer (Malleus sp.). Also winged ones (Family Pteriidae) that settle on sea fans and hydroids.
Fan shell clams (Family Pinnidae). I learnt that these have kidneys that store calcium and iron. It is not know why, perhaps these animals 'recycle' the bits of their thin shells that break off easily and crumble into the animal?
Jingle shells (Family Anomiidae). These animals stick onto hard surfaces by producing byssus reinforced by calcium, through a hole on one valve.
File shell clam (Family Limidae) which has lovely long tentacles. Rene found one on our trip last weekend on one of our submerged reefs!
Giant Clam Girl) and Kareen show us the Fluted giant clam babies (Tridacna squamosa) that they have raised from scratch. These precious babies
are in their nursery tanks.
repopulate our reefs.
We will learn more about this wonderful effort on Friday during their
presentation. But here's some information about their work.
Api-api jambu (Avicennia marina) mangrove tree at St. John's. It's still doing alright.
Tomorrow, I will be joining the Workshop for their survey at Kranji!