Showing posts with label dorado. Show all posts
Showing posts with label dorado. Show all posts

Friday, 21 March 2014

El Dorado

The dorado (Coryphaena hippurus)), also known as the dolphin- fish or mahi- mahi,  is one of my all time favourite marine fish species. They are often seen associating with large tuna, billfish and dolphins- particularly during feeding frenzies when they often leap high out of the sea. They also frequent floating objects where they lurk in the shade- ready to pounce on unwary prey. Spectacularly coloured, fast and agile, these fish can often be seen pursuing flying fish that rise up from the sea surface in an attempt to avoid being eaten! Dorado often accompany ships in tropical waters- frequently riding the pressure wave off the bow. The chromataphores- cells in their skin, allow them to change colour like a chameleon when they become excited or agitated. Yesterday I saw two of these awesome ambush/pursuit predators slowly swim alongside the vessel, burst into an incredible underwater sprint, then explode through the sea surface as they attempted to catch the flying fish that were being constantly flushed ahead of the ship- difficult to capture the explosive nature of the hunt on film (especially with no polarising filter) but a few shots were achieved. My next big challenge is to try and photograph the flying fish! 

It has gone very quiet on the seabird front with just a few transient pomarine and long-tailed skuas. 





long-tailed skua
long-tailed skua

Saturday, 21 July 2012

Boobies n stormies

Generally things have quietened down some what. With noon temperatures hovering around 34 celsius in the shade, being on deck is hard going when there is little to see. We seem to be surveying in an area with little marine life- the occasional flying fish, a brief glimpse of a distant great shearwater and the occasional bonus bird. Yesterday we had a very brief encounter with a nice adult brown booby- the bird kept its' distance and the light was not the best but it brightened up an otherwise dull day!

brown booby
A couple of dorado have also been seen around the bow of the vessel, ambushing the flying fish whenever the opportunity arises.

dorado, also known as dolphin-fish and mahi mahi
arty dorado!
Today was rather busier, with sooty terns, a lingering great shearwater, several leach's storm petrels, a pod of 16 sperm whales and a distant group of dolphins. I managed slightly better shots of the leach's storm petrels but admit to finding them very frustrating as they are shy of the ship and difficult to capture as they flit and bound over the waves and swell!

Leach's storm petrel
Leach's storm petrel
Leach's storm petrel
Fast running out of days to get a Wilson's as I should be doing my crew change off this ship next wednesday! (25/07)............