Jorge I. Merchán M
@roysh.bsky.social
Biologist
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Living at the sea
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"...rerum natura nusquam magis quam in minimis tota sit" Pliny The Elder
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Living at the sea
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"...rerum natura nusquam magis quam in minimis tota sit" Pliny The Elder
Finding out that the town you are visiting is full of fossils it's quite a nice surprise
December 21, 2025 at 11:53 PM
Finding out that the town you are visiting is full of fossils it's quite a nice surprise
Sometimes animals just run into you when you get in the sea
October 5, 2025 at 7:08 PM
Sometimes animals just run into you when you get in the sea
Not sure why the link won't preview any thumbnail, so check one of the species we found:
Styloplanocera fasciata
A relatively big polyclad capable of swimming and moving quite fast. Also they like to curl when disturbed :)
Styloplanocera fasciata
A relatively big polyclad capable of swimming and moving quite fast. Also they like to curl when disturbed :)
September 19, 2025 at 2:34 PM
Not sure why the link won't preview any thumbnail, so check one of the species we found:
Styloplanocera fasciata
A relatively big polyclad capable of swimming and moving quite fast. Also they like to curl when disturbed :)
Styloplanocera fasciata
A relatively big polyclad capable of swimming and moving quite fast. Also they like to curl when disturbed :)
Sometimes you get to see animals you have never seen before and that's cool :) 🪸
August 6, 2025 at 2:24 AM
Sometimes you get to see animals you have never seen before and that's cool :) 🪸
Not sure about the name of this one but it's a pretty good looking starfish.
There are always surprises under the rocks
There are always surprises under the rocks
May 30, 2025 at 12:45 AM
Not sure about the name of this one but it's a pretty good looking starfish.
There are always surprises under the rocks
There are always surprises under the rocks
I should probably start sharing the pics of underwater creatures I find rather than just posting them on iNaturalist.
While this is a common species in the entire Caribbean, I always find fascinating its pattern. It has scared me a couple times when gets out out of nowhere 🦑
While this is a common species in the entire Caribbean, I always find fascinating its pattern. It has scared me a couple times when gets out out of nowhere 🦑
March 28, 2025 at 1:50 PM
I should probably start sharing the pics of underwater creatures I find rather than just posting them on iNaturalist.
While this is a common species in the entire Caribbean, I always find fascinating its pattern. It has scared me a couple times when gets out out of nowhere 🦑
While this is a common species in the entire Caribbean, I always find fascinating its pattern. It has scared me a couple times when gets out out of nowhere 🦑
A little guy riding the highways 🚗
September 12, 2024 at 2:38 PM
A little guy riding the highways 🚗
Finally got to see a terrestrial nemertine!
Here Geonemertes pelaensis entering a termite? hole in a palm tree
Here Geonemertes pelaensis entering a termite? hole in a palm tree
September 11, 2024 at 2:24 AM
Finally got to see a terrestrial nemertine!
Here Geonemertes pelaensis entering a termite? hole in a palm tree
Here Geonemertes pelaensis entering a termite? hole in a palm tree
I think these are good candidates for Polychaete Day:
An armored-looking worm from the genus Bhawania
And the always nicely colored Spirobranchus
An armored-looking worm from the genus Bhawania
And the always nicely colored Spirobranchus
July 1, 2024 at 10:16 PM
I think these are good candidates for Polychaete Day:
An armored-looking worm from the genus Bhawania
And the always nicely colored Spirobranchus
An armored-looking worm from the genus Bhawania
And the always nicely colored Spirobranchus
Finally got a camera for underwater shots, hopefully I'll learn to get nice pics with it
June 2, 2024 at 11:44 PM
Finally got a camera for underwater shots, hopefully I'll learn to get nice pics with it
For the next #WormWednesday a little closeup of Phrikoceros mopsus
June 2, 2024 at 11:36 PM
For the next #WormWednesday a little closeup of Phrikoceros mopsus
Not a pretty picture, but some promising results!
May 20, 2024 at 11:47 PM
Not a pretty picture, but some promising results!
Missing the fieldwork days
April 10, 2024 at 4:31 PM
Missing the fieldwork days
Last Friday I officially started my masters. Time to do some research on little worms :D
March 5, 2024 at 5:11 PM
Last Friday I officially started my masters. Time to do some research on little worms :D
Phone memory full of small little inverts 🐙
Not that I wanted it to be any different
Not that I wanted it to be any different
January 24, 2024 at 2:28 PM
Phone memory full of small little inverts 🐙
Not that I wanted it to be any different
Not that I wanted it to be any different
One with more arms so he can support all that emotions
January 24, 2024 at 5:26 AM
One with more arms so he can support all that emotions
"Take, it's dangerous out there"🦀
January 23, 2024 at 2:29 AM
"Take, it's dangerous out there"🦀
A cute Stomolophu, probably S. meleagris from yesterday 🪼
December 18, 2023 at 7:09 PM
A cute Stomolophu, probably S. meleagris from yesterday 🪼
Haha yeah had to go through a few of this ~4 mm worms before having 'good' slides. Getting better with the practice tho
December 16, 2023 at 10:58 PM
Haha yeah had to go through a few of this ~4 mm worms before having 'good' slides. Getting better with the practice tho
Wormy histology, not the best section but definitely not the worse (:
December 15, 2023 at 1:13 PM
Wormy histology, not the best section but definitely not the worse (:
An interesting little mollusk, I guess it feeds on sponges as appears to have spicles 🦑
December 5, 2023 at 1:10 AM
An interesting little mollusk, I guess it feeds on sponges as appears to have spicles 🦑
Somewhat common polyclad in the Caribbean, but with a little more eyes than usual 🌎
December 1, 2023 at 2:06 PM
Somewhat common polyclad in the Caribbean, but with a little more eyes than usual 🌎
A little guy under rocks 🐙
December 1, 2023 at 12:56 PM
A little guy under rocks 🐙