Sex, sea turtle, seagrasses and super star!

So much has happened during the recent low spring tide, it's hard to decide where to start.

But certainly the highlight must be the annual spawning by our hard corals!

Many waited with bated breath as the time of the year approached for mass spawning on our reefs. So it was with relief and delight that we finally hear that they Did It again this year.

Shared on the blooooooooooo blog, our corals were spawning at Raffles Lighthouse!
She also shares that coral spawning in Singapore was first recorded by Dr James Guest of Tropical Marine Science Institute, NUS in 2002. And that least 18 different coral species from ten genera and five families (Acroporidae, Faviidae, Merulinidae, Oculinidae and Pectiniidae) have been observed to spawn in our waters!

During that dive, a nurse shark was also observed and shared on the urban forest blog.

Alas, the volunteers at Hantu did not see mass spawning among the corals at Pulau Hantu during the Earth Day Coral Spawning dive on 24 Apr.

But they sighted Betsy - the ginormous resident hawksbill turtle at Hantu!


Other sightings included lots of colourful nudibranchs and flatworms, a sea horse, acropora goby, razor fish, a pregnant pipefish.

Blog entries about this trip
The Hantu Bloggers were back in the waters to explore Hantu on 27 Apr and spotted more nudibranchs, sea stars, feather stars, a GIANT cowrie, sting ray, sea horse and had encounters with jellyfish.
Blog entries about this trip
Meanwhile, a bunch of intrepid volunteers spent the low tide hunting for echinoderms with Dr Lane, co-author of A Guide to Sea Stars and Other Echinoderms of Singapore.

They spent Earth Day 22 Apr on Pulau Semakau. While they didn't find too many echinoderms, they did spot lots of other marine life including cuttlefish, and a really huge nudibranch.And Sam remarks: "Good Lord! Some moronic fisherman left his brain behind!"
He later explains: "Actually it's a brain coral (Family Mussidae)"

Blog entries about this trip
The echinoderm hunters had much better luck on Cyrene Reef on 25 Apr. This submerged reef in the middle of our port was simply teeming with sea stars and other echinoderms! This montage of Knobbly sea stars from the nature scouter blog shows the stunning variety in just one kind of sea star.
Although lots of echinoderms were spotted, it was only in the dying minutes of the low tide that Vyna found the sought after Special Star!
This beautiful jewelled sea star is a new record for Singapore! It is Pentaceraster sp., possibly Pentaceraster tuberculatus. It's amazing that a reef in the middle of our port can be rich not only in ordinary but also extraordinary marine life.

Other sightings include a fabulous red feather star, a flag-bearing fish, octopus, sea hares and more.

Blog entries about this trip
Meanwhile, the volunteers of TeamSeagrass were busy too!

A small team of Seagrassers set up and manned a booth about seagrasses at Singapore Polytechnic's Earth Day event on 22 Apr.With specimens including an unfortunate baby dugong (which has been dubbed Bruce), the volunteers share about the importance and plight of seagrasses.

TeamSeagrass also monitored the seagrasses of Sentosa's natural shores on 24 Apr.

In addition, there were lots of other activities ...

There were walks
There were talks
And there was training
  • ReefAlert Training was conducted, more on the ashira blog.
There's lots to discover about our shores! And much work to be done for them!

Here's more about what you can do for our reefs and shores.

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