Mad as a Marine Biologist

neaq:

Photomegatron Maps Coral Reefs
Traditionally, marine scientists would gather data on corals by photographing and measuring a one square meter area or quadrat. That method gives consistent data on a coral area over time, but it’s also a very small area … so scientists are trying out new methods like this one. It’s affectionately called the PHOTOMEGATRON. It’s two Nikon SLR’s, mounted in a protective frame with lasers.

A researchers swims it over the reef as the cameras record coral cover. The images are assembled later to create a comprehensive map that includes larger coral formations that would be missed in the quadrat system.

Full description from the researchers using this system right now in the Phoenix Islands.

High-res underwaterpix:

Nudibranch in Catalina Island, Southern California
Brought to you by Underwater Photography Guide, the best online resource for divers and underwater photographers.

Look at his cute little face!! 

underwaterpix:

Nudibranch in Catalina Island, Southern California

Brought to you by Underwater Photography Guide, the best online resource for divers and underwater photographers.

Look at his cute little face!! 

headlikeanorange:

This odd couple consists of a goby and a shrimp. The shrimp, who has poor eyesight, dug their burrow and keeps it clean, while the goby is on the lookout for predators. It pushes the shrimp down the burrow when it detects danger. (Desert Seas - National Geographic Channel)

The goby signals ‘levels’ of danger by different flicks of it’s tail. The shrimp can detect the vibrations and stay in the burrow until the threat disappears, or the Goby retreats. 

(via faunafacts)