Marine science · Ocean policy · PADI Instructor

Graham
Patterson

I fell in love with coral reefs and have spent the years since trying to look after them, alongside the scientists who study them, the divers who visit them, and the communities who call them home.

WorkPlayToolsSay Hello

Right now, on reefs I love

ReefWaterHeat stressNOAA status

Mahahual

Mahahual

I learned to dive in 2010, while I was teaching English in Thailand. In the spring of 2019 I spent two weeks diving in Mahahual, Mexico, on what had once been called the healthiest stretch of the second-largest reef system in the world. I had been there a few years before and was excited to go back.

What greeted me was a reef in drastic decline.

Seaweed covered the water as far as I could see and was piled waist-high on the beach. It shaded the coral and pulled oxygen out of the water as it rotted. Locals told me that kids used to be sent into the shallows to catch dinner by hand. Now the shallows were strung with nets, and workers were wheelbarrowing rotting seaweed off the sand. My dive instructor told me she had cried underwater more than once, witnessing an ecosystem in quick decline.

On one of my last dives, we saw a giant sea turtle in the distance. These turtles enjoy a lifespan similar to humans, I recalled. This beautiful creature had experienced the once-healthy coral reef where she was born, slowly at first, and now rapidly, begin to die. As I pondered, the turtle swam closer and closer. Before I knew it, she was only a foot away, looking me in the eye. Time stood still as I silently promised her that I would do everything in my power to help make her home the beautiful thriving place she once knew.

Sighting · 7 m Elkhorn coral, Acropora palmata (my favorite coral!), among its neighbors. Corals add a thin band of skeleton every day. Fossil corals from about 400 million years ago carry roughly 400 bands per year, which is how we know a day then lasted about 22 hours.

Tools I built

Small tools for a big ocean.

OceanView Tab: a southern stingray glides over white sand in a browser tab, with a panel showing water and air temperature, waves, swell, wind and tide.

Chrome extension · live

OceanView Tab

A small moment of ocean every time you open a new tab, with live conditions at your dive site if you want them. No accounts, no ads, no tracking.

Photo: Gregory Piper / Ocean Image Bank

Coral Spawning Tracker

Which nights the corals will spawn, across the Indo-Pacific.

Coral Species ID

Name a coral from a photo. In testing.

Coral Shading Protocol

An open field method for shading corals through heat.

Publishing papers

Published: coral spawning in the Philippines. Submitted: coral shading.

Sighting · 18 m Whale shark, Rhincodon typus, with young golden trevally. The largest fish alive feeds on copepods, krill, fish eggs and coral spawn, straining around 600,000 liters of seawater an hour. Its eyes are armored with tiny teeth, and it can pull them back into its head.

Places

Places along the way.

Some of the places that shaped my journey. Spin the globe and choose a light.

    Sighting · 25 m Day octopus, Octopus cyanea. Its eyes have a single type of photoreceptor, which should make it colorblind, yet it matches the colors around it in seconds. It hunts in mixed packs with reef fish, and has been filmed punching the ones that hang back.

    Play

    A few of my favorite things.

    Ocean films I keep returning to.

    Each one opens its trailer. The rest of my list is below, if you want to trade recommendations :)

      On the nightstand, rereading.

      • The Omnivore's DilemmaMichael Pollan
      • The Many-Headed HydraLinebaugh & Rediker
      • Henderson the Rain KingSaul Bellow
      • The Only Flag Worth FlyingSarah Levy
      • CollapseJared Diamond
      • Pandora's StarPeter F. Hamilton IslandAldous Huxley

      Favorite podcasts.

        Sighting · 35 m Moon jellyfish, Aurelia. Among the most energy-efficient swimmers ever measured: each pulse leaves a ring of spinning water that pushes the bell forward again while its muscles rest. A young moon jelly that loses arms does not regrow them. It rearranges the ones it has left until it is symmetrical again.