PBS Anywhere

Providing Support for PBS.org

Under H2O

The Intertidal

5:49

One of the most difficult habitats for any organism to inhabit is the intertidal. Wave energy, temperature fluctuations, and salinity changes make living here impossible for all but a few of the hardiest plants and animals. In the 4th episode of our series UnderH2O, we sneak into this mostly unexplored habitat during the short window of time when the tide is out and the tidepools are accessible.

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

Into the Mangrove Forest

The mangrove forest is a place of amazement both above and below the waterline.

5:45

See all Episodes