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Author: Katherine Grellman

I'm an MSc student in marine biology at the University of Hawaiʻi at Mānoa. I conduct research through the Johansen Fish Resilience Lab at the Hawaiʻi Institute of Marine Biology. I'm currently studying the effects of sedimentation on the foraging behavior of herbivorous coral reef fish. Before grad school, I got a double BS in environmental geology and environmental studies at Tufts University before working at a shark research lab in the Bahamas. In my free time, you can find me climbing, running, or reading at the beach.
Underwater buffet: Who wants the ectoparasites?
Parasitism

Underwater buffet: Who wants the ectoparasites?

Scientists identify the primary consumers of ectoparasites in coral reefs.
February 12, 2024February 4, 2024 Katherine Grellman
Some Caribbean parrotfishes find benthic cyanobacterial mats particularly tasty
Behavior

Some Caribbean parrotfishes find benthic cyanobacterial mats particularly tasty

I guess we’ve all got our guilty pleasures
October 29, 2023October 28, 2023 Katherine Grellman
Researchers refute hypothesis that schools of baitfish travel alongside whale sharks for protection from predators
Ecology

Researchers refute hypothesis that schools of baitfish travel alongside whale sharks for protection from predators

Video footage shows trevally attacking and feeding on baitfishes
September 25, 2023September 23, 2023 Katherine Grellman
Where do sea snakes go?
Behavior

Where do sea snakes go?

Researchers use acoustic telemetry to track the movement patterns of sea snakes.
August 25, 2023August 22, 2023 Katherine Grellman
Tropical fish moving to colder regions are affected by projected seasonal ocean temperature and acidification
Climate Change

Tropical fish moving to colder regions are affected by projected seasonal ocean temperature and acidification

Can tropical and temperate fish coexist?
June 22, 2023June 21, 2023 Katherine Grellman
Researchers watched a ton of parrotfish in their sleep to uncover sleeping patterns and nighttime habitat use
Behavior

Researchers watched a ton of parrotfish in their sleep to uncover sleeping patterns and nighttime habitat use

It’s not creepy if it’s for science!
May 22, 2023May 16, 2023 Katherine Grellman
Invaders of the deep: Controlling mesophotic lionfish populations in Bermuda
Ecology

Invaders of the deep: Controlling mesophotic lionfish populations in Bermuda

Can we successfully target deep lionfish populations?
April 27, 2023April 26, 2023 Katherine Grellman
Microplastic, macro problem: Microplastics discovered in fishes from remote coral reefs in the South China Sea
Plastic Pollution

Microplastic, macro problem: Microplastics discovered in fishes from remote coral reefs in the South China Sea

Scientists quantify microplastics in various species of coral reef fishes from the Xisha Islands.
March 30, 2023March 27, 2023 Katherine Grellman
Home is where the color is: Anemonefishes prefer unbleached sea anemones
Behavior

Home is where the color is: Anemonefishes prefer unbleached sea anemones

How do fish respond to bleached sea anemones?
February 28, 2023 Katherine Grellman

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