Finding foraminifera on the beach is incredibly difficult

Nature Talk
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1

It’s been quite a while since I last looked through a microscope. This year, I’ve decided to make it my year of recording marine species. As I’ve been visiting the coast more frequently, I’ve gradually developed a strong interest in foraminifera and other marine plankton. I’ve seen experienced enthusiasts collect sand from the beach and successfully find foraminifera under a microscope, which made me eager to try it myself.

However, I eventually realized that the beaches in my city rarely have them. I’ve already collected samples from three different beaches, spending over four hours examining each one, only to find nothing but plain sand. I guess the conditions of other people’s beaches are just incomparable to mine. I can only say that finding them is truly a challenge. So far, I haven’t even managed to take a single photo of a foraminifer. Honestly, if this is how hard it is, I can’t even begin to imagine how daunting it would be to collect and document other marine organisms.

2

There is a certain strategy to collecting small invertebrates from drift. It’s best to look where particles of your target size tend to wash up, as different sizes fall out of the water column at different places. Look at places such as the tideline, the bottom of tidepools, and points where things seem to wash up more frequently, especially grit and gravel with larger particles. Just looking in sand may not be productive as most sand particles are smaller than forams.