X-Ray Mag

Whale shark aggregation found in the Red Sea

9 years ago By Chief minion

A multinational team of researcher utilized three types of satellite transmitting tags to track the movements of 47 whale sharks from 2009 through 2011. The tags, which are placed just below the dorsal fins, measure temperature, depth, and light levels of the waters the fish swim in. After several months, the tags pop off, float to the surface and beam data via the ARGO satellite system back to computers on shore.

Humpback Fluke ID project needs your help

9 years ago By Chief minion

All fluke shots will be credited to the photographer, but we will be sharing these with the scientific community and making this freely available to any researcher or organisation that would not normally have access to such resources.

Step 1

Upload to dropbox and share the link with us at scott.portelli@gmail.com

or

Send us your email address and we will add you to the shared dropbox folder http://www.dropbox.com/TongaFlukeID

Kite surfing, Oahu, Hawaii
Kite surfing, Oahu, Hawaii

Sharks may mistake some humans for birds

9 years ago By Scott Bennett

A case report documenting a fatal South Pacific shark attack suggests sharks may mistake recreational water users for birds. The report, published in the Journal of Forensic and Legal Medicine, theorizes kite surfers may be at risk for such confusion. The victim, a 15-year-old kite surfing male, died after being attacked by a tiger shark in New Caledonia.

Anthias (filephoto) - one of the species used in the experiment

Fish need to decompress too

9 years ago By Chief minion

According to CAS’s Matt Wandell the chamber is fairly simple in design and can bring a fish up to to surface pressure in around 20 hours or so without adverse effects.

Aside from burst swim bladders, fish, like humans, can also get decompression sickness when exposed to rapid changes in pressure during capture.

“Bent” fish are most likely widespread in the live reef fish trade, as most of the species that have been examined were found to suffer symptoms of decompression sickness after capture from shallow depths of 10 to 15 metres.

Subscribe to