JBL Workshop 2005 Red Sea

back to the worldmap overview
Workshop 2005 - participants and camp

81 persons from 8 nations took part in the 1st JBL workshop at the Red Sea. The workshop took place at the Marsa Shagra Ecolodge, directly on the coast at a gap in the reef. Divers and snorkellers were therefore able to cross sand to enter the water, without damaging the reef encircling the coast.

Workshop 2005 - underwater fish

One week was devoted to research activities. Under the guidance of experts, water samples were taken and analysed and underwater light measurements carried out. Underwater feeding trials on free-ranging reef inhabitants gave useful information on the acceptance of JBL MariPerls marine food.

The aggression behaviour of fish could be observed in mirror trials. Using a special plankton net, plankton was gathered and identified under a microscope. The participants observed oceanic whitetip sharks (Carcharodon longimanus)on Elfinstone Reef, after having learnt to understand about their body language in a lecture by Dr. Erich Ritter (Shark Project).

    Sharks on Elphinstone

    Body language of the sharks. In a lecture by Dr. Erich Ritter (Shark Project) all participants were familiarized with the body language of the shark. In video clips, Dr. Ritter showed his interaction with white sharks when swiming in the open waters of South Africa. During subsequent dives on Elphinstone Reef (30 minutes from the coast) the participants...

    Find out more

    The inside of the reef.

    The diving group members had the opportunity to look at the inside of a reef (Dolphin House). The divers were able to reach the inside through a cleft in this massive, free-standing reef column and explore between the coral rocks. Hardly any life was to be found in the interior. Only in very few places where the sun´s rays shone through the lacework reef...

    Find out more

    Dolphins

    Find out more

    Underwater reef

    Find out more

    Underwater invertebrates

    Find out more

    Turtles

    Turtles could be observed at all dive or snorkelling sites. The creatures showed no fear of divers and continued with their activities unperturbed. The participants were able to clearly observe how one single turtle can consume a relatively large amount of soft coral! After a generous meal a turtle leaves behind an area grazed bare of about 30 x 30 cm...

    Find out more

    Desert trip and lizards

    The participants set off in groups on various methods of transport into the desert, which consists of stone desert in this part of the country. The sand desert with its high sand dunes only begins west of the Nile Valley. Some participants chose quad bikes, some jeeps, whilst others selected camels as their mode of transport. The lizards observed were a type...

    Find out more

    Water analyses

    Water samples were taken at different locations and at different depths. To do so neutral plastic bottles were filled with water at the surface, opened at the corresponding depth, inverted and filled with air, then again inverted and filled with the surrounding water to be tested. The samples were analysed one hour later at the most using both JBL water...

    Find out more

    Feeding trials

    The participants offered the reef inhabitants JBL MariPerls (a special marine granulate food). Observations were made and notes taken on which fish species reacted positively to the food and which negatively. It should be noted that fish have never been fed on this section of reef and that they were correspondingly shy....

    Find out more

    Mirror experiments

    Aggressive behaviour studies: in this experiment a 30 x 30 cm mirror was set up underwater in front of the divers and snorkellers and the behaviour of the fish was observed when they noticed their reflection. Many observations showed that most fish do not react to their reflection. It took a while until the fish approached the mirror which the diver had set...

    Find out more

    Plankton examination

    A plankton net with a 105 µm mesh was used. This was dragged along slowly just below the surface of the water within the house reef bay of Marsa Shagra for 5 minutes. The live catch was then examined under a stereo microscope at 40X magnification. 90% of finds were copepods. The remaining 10% consisted of various forms of larvae (shrimp etc.)....

    Find out more

    Zoning

    The divers laid a sinking nylon line from the topmost point of the reef flat to 24m deep. Boards were attached to the line every 5m to show the divers which section of the line they were on. All sessile (stationary)organisms along the line were identified and counted, including all organisms within a meter on the right and left of the line. Only colonies were...

    Find out more

    Preliminary trip

    Find out more

A word about cookies before we continue

The JBL Homepage also uses several types of cookies to provide you with full functionality and many services: We require technical and functional cookies to ensure that everything works when you visit this website. We also use cookies for marketing purposes. This ensures that we recognise you when you visit our extensive site again, that we can measure the success of our campaigns and that the personalisation cookies allow us to address you individually and directly, adapted to your needs - even outside our website. You can determine at any time - even at a later date - which cookies you allow and which you do not allow (more on this under "Change settings").

The JBL website uses several types of cookies to provide you with full functionality and many services: Technical and functional cookies are absolutely necessary so that everything works when you visit this website. In addition, we use cookies for marketing purposes. You can determine at any time - even at a later date - which cookies you allow and which you do not (more on this under "Change settings").

Our data protection declaration tells you how we process personal data and what purposes we use the data processing for. tells you how we process personal data and what purposes we use the data processing for. Please confirm the use of all cookies by clicking "Accept" - and you're on your way.

Are you over 16 years old? Then confirm the use of all cookies with "Noticed" and you are ready to go.

Choose your cookie settings

Technical and functional cookies, so that everything works when you visit our website.
Marketing cookies, so that we recognize you on our pages and can measure the success of our campaigns.

PUSH messages from JBL

What are PUSH messages? As part of the W3C standard, web notifications define an API for end-user notifications that are sent to the user's desktop and/or mobile devices via the browser. Notifications appear on the end devices as they are familiar to the end user from apps installed on the device (e.g. emails). Notifications appear on the end user’s device, just like an app (e.g. for emails) installed on the device.

These notifications enable a website operator to contact its users whenever they have a browser open - it doesn’t matter whether the user is currently visiting the website or not.

To be able to send web push notifications, all you need is a website with a web push code installed. This allows brands without apps to take advantage of many of the benefits of push notifications (personalised real-time communications at just the right moment).

Web notifications are part of the W3C standard and define an API for end user notifications. A notification makes it possible to inform the user about an event, such as a new blog post, outside the context of a website.

JBL GmbH & Co. KG provides this service free of charge, and it is easy to activate or deactivate.