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Showing results for "temperature"

Two nurse sharks hover over a baited cage

Lesson Plan

Sea Surface Temperature and Coral Bleaching

Students will learn about how ocean temperature increase can be a cause of coral...

Mon, 11/30/2009 - 12:30

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GEOMAR scientist Armin Form works at his lab during a long-term experiment on the effects of lower pH, higher temperatures and "food stress" on the cold-water coral Lophelia pertusa.

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Deep-water Corals and Acidification

GEOMAR scientist Armin Form works at his lab during a long-term experiment on the...

These bleached corals in the Gulf of Mexico are the result of increased water temperatures.

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Bleached Corals

What is coral bleaching? These white corals in the Gulf of Mexico’s Flower Garden...

A photo of coral visibly affected by disease.

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Diseased Coral

A photo taken at a reef near Bocas del Toro, Panama. The reef suffered a mass...

Compare the healthy coral on the left with the bleached coral on the right.

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Bleached Corals, Pacific Ocean

Compare the healthy coral on the left with the bleached coral on the right....

UV light illuminates growth rings in a cross-section of 44-year-old Primnoa resedaformis coral found about 400 m (1,312 ft) deep off Newfoundland.

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Coral Growth Rings

Ultraviolet light illuminates the growth rings in a cross-section of a 44-year-old...

In this photo of a shallow coral reef in the Pacific there are three species of forams. Their colors come from the symbiotic algae that live inside the foram shells.

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Shallow Coral Reef Foraminifers

In this photo of a shallow coral reef in the Pacific there are three species of...

Purple, pink and green corals growing underwater on a metal fence-like substrate.

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The Coral Gardener

When coral reefs are damaged, they sometimes struggle to grow back because there...

Close-up photograph of translucent coral polyps, showing the symbiotic algae living inside.

slideshow

Zooxanthellae and Coral Bleaching

Tiny plant-like organisms called zooxanthellae live in the tissues of many animals,...

Thu, 12/03/2009 - 12:14

This orange boring sponge (Cliona varians) overgrows several coral species at Panama's Smithsonian Tropical Studies Institute.

Personal Perspectives

Ocean Acidification Excites Boring Sponges

Boring sponges get a bad rap. Their own name betrays them, announcing to the world...

March 2013

A bluefin trevally swims in Hawaii’s Maro Coral Reef, part of the Papahānaumokuākea Marine National Monument.

slideshow

Two Views of Coral Reefs: Thriving and Threatened

Coral reefs are beautiful, vibrant ecosystems that house roughly one quarter of all...

Tue, 12/15/2009 - 11:19

Nuclear bomb in Bikini Atoll

Naturally Resilient

Coral Reefs Can Recover From Disasters. How Can We Save Them From...

May 2013