Today, Prof Ryland systematically went through the different groups of hydroids, covering a vast array of these creatures that may look similar but are very different when we take a closer look. Here, I'm just highlighting some of those that I found interesting. Prof covered a lot more in his talk. This freshwater hydroid is the 'typical' hydroid familiar to many biology students as it is often used in student laboratory work.
I also recognised some of our familiar hydroids. This one can be abundant especially on our Northern shores. I call them fluffy hydroids.
hydroids that sting powerfully. I've been stung by these and they feel like a jolt of electricity.
delicate feathery animals on our shores which I think are hydroids. Must find an opportunity to confirm this.
Aequorea, however, the jellyfish stage is quite large. We have seen these in our waters. To be correct, these are not true jellyfishes, many of which belong to Class Scyphozoa.
found yesterday in large numbers in the mangroves at Lim Chu Kang. They are large enough for me to take with small sneaky cam.