Claim: Stress from unusually warm ocean water heated by man-made climate change and the natural El Niño climate pattern caused the die-off.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: The 2014–16 El Niño was a warming of the eastern equatorial Pacific Ocean that resulted in unusually warm waters developing between the coast of South America and the International Date Line.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: The ENSO is the cycle of warm and cold sea surface temperature (SST) of the tropical central and eastern Pacific Ocean.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: However, over time the term has evolved and now refers to the warm and negative phase of the El Niño–Southern Oscillation and is the warming of the ocean surface or above-average sea surface temperatures in either the central and eastern tropical Pacific Ocean.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: "Impact of Shifting Patterns of Pacific Ocean Warming on North Atlantic Tropical Cyclones".

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: La Niña is the positive and cold phase of the El Niño–Southern Oscillation, and is associated with cooler-than-average sea surface temperatures in the central and eastern tropical Pacific Ocean.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: El Niño–Southern Oscillation (ENSO) is a coupled ocean-atmosphere phenomenon in the Pacific Ocean responsible for most of the global variability in temperature, and has a cycle between two and seven years.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: La Niña (, ) is a coupled ocean-atmosphere phenomenon that is the counterpart of El Niño as part of the broader El Niño Southern Oscillation climate pattern.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: "El Niño in a changing climate".

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: El Nino affects the global climate and disrupts normal weather patterns, which as a result can lead to intense storms in some places and droughts in others.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: El Niño–Southern Oscillation (ENSO) is an irregularly periodic variation in winds and sea surface temperatures over the tropical eastern Pacific Ocean, affecting the climate of much of the tropics and subtropics.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: During El Nino events, deep convection and heat transfer to the troposphere is enhanced over the anomalously warm sea surface temperature, this ENSO-related tropical forcing generates Rossby waves that propagate poleward and eastward and are subsequently refracted back from the pole to the tropics.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: El Niño episodes are defined as sustained warming of the central and eastern tropical Pacific Ocean, thus resulting in a decrease in the strength of the Pacific trade winds, and a reduction in rainfall over eastern and northern Australia.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: El Niño (, , ) is associated with a band of warmer than average ocean water temperatures that periodically develops off the Pacific coast of South America.