Tiny thing under a rock. my best guess would be Wormpod?
~3mm long
Shallow subtidal
under a hole in the sand, didn't realize it was still half buried until too late.
In plankton swimming around
~3mm long
Edit: He's been in my aquarium and He's growing! now ~5mm long. (26/05/22)
Edit 2: Saw him molt!
Edit 3: ~1cm long (5/06/22)
Edit 4: Molted (12/06/22) ~1.3cm
Edit 5: Molted (16/07/22) ~2cm
It died :( (18/08/22) ~2.5cm
Behaviours:
It can see my hand with the food before it enters the water and will react by reaching out for it.
It can rapidly swim and will catch food particles while swimming.
Manukau Harbour seashore at Blockhouse Bay, Auckland. Partly buried in mud under an upper intertidal rock.
There were heaps of these tiny things buzzing around. Could only just see them with a naked eye. Photo is taken on macro lens and zoomed in so not great quality. Thought they were shrimp initially but after viewing they look like some other crustacean - isopod maybe?
Scientific name: Pachygrapsus crassipes
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Crustacea
Class: Malacostraca
Order: Decapoda
Infraorder: Brachyura
Family: Grapsidae
Genus: Pachygrapsus
Species: P. crassipes
Found at pilot bay at midtide during the afternoon.
Method 5 - Sandy flat observations
Quality is bad as screenshots from Snapchat video. Weird slug worm thing. From memory I think it changed colour and changes in size.
some sort of eggs? intertidal zone. maybe similar to https://www.inaturalist.org/observations/15964504
Freshwater worm x20mag.
Maybe PROBOSCIS WORM ( NEMERTEA : NEMERTEA )?
Is this a snot sea cucumber? It’s about the size of my index finger. Feels slimy to touch. Found at just after high tide under a rock.