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Under H2O

Into the Mangrove Forest

5:45

The mangrove forest is a place of amazement both above and below the waterline. Mangroves have the unique ability to live in salt water, and they use their highly specialized roots to filter salt, inhale oxygen, and extract nutrients from an environment that other trees can not tolerate. The world within the tangled mess of mangrove roots is dark, silty, eerie, and wonderful.

Episodes of Under H2O9

Under H2O

Damselfish in Distress

Male damselfish try in vain to protect a brood of eggs from a saddle wrasse assault.

5:38

Under H2O

The Power of Waves

The UnderH2O crew ventures out into Waimea Bay to explore the science of big waves.

7:27

Under H2O

Blackwater Drift Dive

The Under H2O crew journeys far offshore for a midnight blackwater drift dive.

5:20

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