By Shark Info
The lists compiled by the IUCN (International Union for Conservation of Nature and
Natural Resources) represent the start of obtaining an overview of endangered
species. Almost 60 shark species are currently listed on the IUCN Red List which,
unfortunately, is quite incomplete when it comes to sharks, mainly due to the lack of
documented research.
IUCN research on both listed shark species as well as other animal species is carried
out in accordance with given criteria which allows them to be divided into different
categories of endangerment ranging from "data deficient" to "extinct in the wild", with a
host of other classifications between the two. Astonishingly enough, only those
species are listed which were able to be researched with regard to their
endangerment. The big problem, however, is that many species wind up on the lists
after it is too late to save them or when the chance of saving them is at least
questionable. Financial bottlenecks often prevent studying species which are
potentially endangered, and those in charge often limit themselves to studying
species which are easy to research or those found by chance (e.g. the Ganges shark)
which are not consciously sought but are accidentally rediscovered in a fisherman's
net or in a museum.
But what about the remaining 400 shark species? Are any of them threatened? Of
course they are. Some are either so rare that one seldom encounters them, others
cannot be studied due to financial reasons. This leads to the next logical question: Of
what value is this list of endangered species when we do not know which other
species are threatened or when the relationship between those listed and those not
yet researched is left unexplained? Today it would be advisable as a precautionary
measure to first put all sharks under some form of protection, perform the appropriate
research and only then remove any nonthreatened species from the list, giving them a
free to catch status. When a species' population density is so thin that no partners are
available for mating purposes it is considered biologically extinct, a situation which
precludes any protective measures from being taken to help save it.
Sixty percent of all shark species on the IUCN lists fall under the category "data
deficient" (insufficient data) or "low risk". The remaining species are designated as
"endangered", "vulnerable" and "critically endangered". It does not take a psychic to
realize that these statistics do not reflect reality. There are many more endangered
shark species than only the 25 termed as threatened or shortly before extinction, but
insufficient finances and personnel bottlenecks prevent us from really getting to the
bottom of this situation.
Assuming that some of these species - such as the Borneo shark (Carcharhinus borneensis),
the Ganges shark (Glyphis gangeticus) or the speartooth shark (Glyphis glyphis),
just to mention a few - are really endangered or even threatened by
extinction, then everything possible must be undertaken to prevent them from being
fished or killed in bycatch. However, in most cases such protection remains wishful
thinking. Even at the last CITES Conference (Convention on International Trade in
Endangered Species) held in April 2000 at which 150 nations participated, no
protective status was given to the well-known white sharks (Carcharodon carcharias),
the whale sharks (Rhincodon typus) or the basking sharks (Cetorhinus maximus) to
prevent them from being massacred or sold. Good will alone certainly does not suffice
to change this situation since protective measures are only effective when they are
legally anchored.
Despite the fact that IUCN lists are incomplete when it comes to sharks and that no
international legislation exists to protect the endangered species, the lists are still
considered a first step because they give this group of endangered animals a general
status and provide politicians with arguments which could pave the way to their
protection.
A promising move in the right direction is recognizable on a national level in the U.S.,
South Africa and Australia where white sharks have been very effectively protected.
Not too long ago Australia also put sand tiger sharks (Carcharias taurus) under
protection. Hope remains that more and more people will soon better understand the
situation with sharks and realize how many additional shark species require
protection.
The list of shark species with their respective degree of endangerment
is available from Shark Info.
May be published only by indicating the source: Shark Info / Shark Info
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