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Warming trends, resilience, forecasting, and the data behind a changing climate.

Whale shark swimming under crystal clear water of ocean near surface under sunlights

What Is the Biggest Fish in the Ocean?

The whale shark is the biggest living fish in the ocean. Despite its name and enormous size, it is a shark rather than a whale. This spotted giant feeds mainly by filtering plankton and small animals from seawater, a strategy very different from the large-prey hunting often associated with sharks. Its size record and feeding…

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Rocky_tide_pool_beside_the_ocean

What Is a Tide Pool?

A tide pool is a pocket of seawater left in a depression on a rocky shore when the tide recedes. It may be only inches across or large and deep enough to hold fish. For the hours before the ocean returns, the pool becomes a small, partly isolated habitat where temperature, salinity and oxygen can…

Mangrove_trees_and_roots_beside_coastal_water

What Is a Mangrove Forest?

A mangrove forest is a coastal wetland dominated by salt-tolerant trees and shrubs that grow where tropical or subtropical land meets sheltered seawater. Its most visible feature is often a maze of roots standing above mud or water. Those roots anchor trees in soft sediment and create habitat used by fish, crabs, birds and many…

Sunlight_filtering_through_an_underwater_kelp_forest

What Is a Kelp Forest?

A kelp forest is a dense underwater habitat formed by large brown algae along cool, shallow, rocky coasts. Kelp is not a tree or even a plant in the botanical sense. It is algae, yet tall species can create a canopy, shaded middle layers and a crowded seafloor that function much like the levels of…