|
A Day Sailing on the Thalassa Sailing EcoTour
Charter
Participating in a dolphin and whale watching
tour is a unique experience! We will have the time to teach you the essentials
of the cetacean research methods. The initial purpose is to enable you to
distinguish the different species that
we
will meet. In the specific sea area the species we most frequently encounter are
Bottlenose dolphins (Tursiops truncatus), Stripped dolphins
(Stenella coeruleoalba), Common dolphins (Delphinus delphis),
Risso's dolphins (Grampus griseus), Cuvier's beaked whales
(Ziphius cavirostris) and Sperm Whales (Physeter catodon).
There have also been reports of Fin whale (Balaenoptera physalus).
The island complex is also a sanctuary for the Mediterranean
sea turtle (Caretta caretta) while the sight of Monk seal (Monachus
monachus) is not considered a surprise. The crew will give you the necessary
guidelines on the ways that we distinguish the certain Cetacean species.
The next thing to do is to record their
movements. The ship will be equipped with the latest version of digital maps and
software with the ability to record every day's tracks and the specific
positions of dolphin contacts (sightings). We will be able to gather information
about their frequency and distribution in the field area, which are
statistically analyzed in the laboratory and can give us many clues about their
population size and their abundance. Are they living permanently in the specific
sea area, are they immigrating, which are the reasons of their presence there,
which is the structure of their societies, are they in danger by human
activities and pollution? These are some of the questions that need to be
answered. You will have the opportunity to reveal these secrets.
Your guide will acquaint you with the most
important method of recognizing the specific individuals: the
photo-identification
method (PID), which is harmless and is widely used in order to create a well
informed database with characteristic photographs of dorsal fins. Dorsal fins
are the dolphins' fingerprints and can reveal the identity of an individual.
They often have scars that are permanent and can be captured by the photographic
lens, in order to separate the individuals and begin studying them in a more
continuous basis.
Every boat is also equipped with the most
important tool for entering in their isolated universe: a hydrophone, which is
needed for bioacoustics research. Dolphins and whales have adopted the most
sophisticated way of conceiving their environment by using echolocation. It is a
biosonar that enables them to form the shapes of the objects, inside the water.
They often transmit high frequency sounds, which are reflected by the specific
object and then are collected by their rostrum, which is the first part of a
complex apparatus that guides the signal to
the
brain for further analysis. This is a rather usual adaptation in the animal
world but as far as the Cetaceans are concerned, it has an extreme scientific
interest due to their interspecies communication. Echolocation is used as a
"language" amongst them, as a navigation and orientation tool and
finally as a feeding instrument due to their ability to catch fish by
transmitting "booms" over 230 decibels.Our itineraries will follow the
tracks of our friends: dolphins and whales! When someone is found near them
discovers serenity and liberty. Their plays, sounds and their interactions are
miraculous. When we notice their freedom and their sensitivity when they are
socializing, it's sure that our perspective of our modern lives will be
reexamined. There is no anxiety, no stress in their world, simply the natural
need for communication and contact.
Exas Worldwide Yacht
Charters Inc
188 Reading Avenue
Oaklyn, New Jersey 08107
Tel: (856) 854-3891 Fax: (856) 854-3175
Email: info@exasyachts.com
Contact in Greece: Tel: (011 30
210) 9882008 Mobile# 6944 753208
Fax: (011 30 210) 9882023 |