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Author: Josiah Grzywacz

I'm a former oceanographer with an MSc in Biological Oceanography from UConn where I studied mixotrophy in marine ciliates. After a year in Poland (studying freshwater critters) I moved to California. I currently work as a lab technician at Stanford. Outside of science, I enjoy a good book, a long run, and frozen fruit.
The tiny drifters with massive appetites
Ecology

The tiny drifters with massive appetites

Tiny translucent jellies can reshape entire food webs
April 14, 2026April 14, 2026 Josiah Grzywacz
The hidden cost of killer whale motherhood
Behavior

The hidden cost of killer whale motherhood

Even apex predators get worn down by kids
March 31, 2026March 31, 2026 Josiah Grzywacz
Fungal robbers in the Southern Baltic Sea
Ecology

Fungal robbers in the Southern Baltic Sea

Algal blooms may have a fungus problem
February 16, 2026February 16, 2026 Josiah Grzywacz
This alga can handle the spotlight
Ecology

This alga can handle the spotlight

How a tiny organism thrives in chaotic coastal light
January 19, 2026January 19, 2026 Josiah Grzywacz
When Diatoms Catch a Cold
Ecology

When Diatoms Catch a Cold

Humans aren't the only ones who get sick when the seasons change
November 14, 2025November 13, 2025 Josiah Grzywacz
Not All Blooms Are Bad: Cyanobacteria and Young Fish in the Baltic
Ecology

Not All Blooms Are Bad: Cyanobacteria and Young Fish in the Baltic

Nitrogen traced from algae to fish reveal an interesting ecological win.
September 4, 2025September 5, 2025 Josiah Grzywacz
Seaweed, the slimy savior of the sea
Ecology

Seaweed, the slimy savior of the sea

Algae versus algae: meet the green team fighting toxic blooms.
August 6, 2025August 13, 2025 Josiah Grzywacz
Tiny, Lazy, Dominant
Ecology

Tiny, Lazy, Dominant

How the ocean's top microbe outsourced its weakness.
May 8, 2025August 13, 2025 Josiah Grzywacz
When cells started snacking
Biological oceanography Ecology

When cells started snacking

Algae rose, protists gorged, and the modern ocean was born.
April 4, 2025August 13, 2025 Josiah Grzywacz
Mixotrophy and the Microscopic Middlemen of the Ocean
Climate Change Ecology

Mixotrophy and the Microscopic Middlemen of the Ocean

As the ocean warms, its tiniest photosynthesizers are rewriting the rules of survival.
March 5, 2025August 13, 2025 Josiah Grzywacz
Hearing in a world of noise: Testing the hearing capacity of minke whales
Ecology Human impacts

Hearing in a world of noise: Testing the hearing capacity of minke whales

How do you test the hearing of a creature the size of a bus in the vast, noisy ocean? With…
December 11, 2024December 10, 2024 Josiah Grzywacz
Seabird poop and coral growth: an unexpected link
Coral Ecology Human impacts

Seabird poop and coral growth: an unexpected link

How corals feast thanks to seabirds digestive systems
November 7, 2024November 7, 2024 Josiah Grzywacz
From laundry to the deep sea
Climate Change Ecology Plastic

From laundry to the deep sea

The impact of microfiber plastics on marine snowfall
October 8, 2024October 8, 2024 Josiah Grzywacz
Decoding the genes behind jellyfish movement
Behavior Ecology genomics

Decoding the genes behind jellyfish movement

How jellyfish know which way is up.
September 10, 2024September 10, 2024 Josiah Grzywacz
Diatoms, calcium, and the continuing challenge of ocean acidification
Ecology

Diatoms, calcium, and the continuing challenge of ocean acidification

They don't have any teeth, but diatoms need calcium. A group out of Shenzen shows why!
July 3, 2024July 3, 2024 Josiah Grzywacz

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