The cetaceans are creatures that live in the seas and oceans of the Earth. Like other animals, not only must they cope with natural threats to their environment, such as predation or disease, but they also interact with human activities, such as fishing. Here we will see how fishing threatens the populations of these marine … Continua llegint Cetaceans and fishing: a dangerous relationship
The function of the reproductive system is apparently simple: to transmit the genes to the next generation. Why does it has so different and curious shapes in all kinds of animals? Would not be enough with a simple sperm-emitting channel and a simple receiver? Find out in this post different shapes and reproductive strategies of birds … Continua llegint Animal genitalia: birds and fish
Fishes, like other vertebrates and many invertebrates, have developed mechanisms to perceive light, which quickly disappears with depth. Let’s see vision in fishes. VISION IN FISH: THE WORLD FROM THE EYES OF A FISH Vision consist on the perception of the light in the environment around us. Because of fishes live in the aquatic environment, … Continua llegint Vision in fish: the world from the eyes of a fish
We have heard many times that fishing grounds are being depleted due to the overexploitation of species. It is also widely said that farm fishing could solve this problem. But, are farms the solution to overfishing? FARM FISHING: THE SOLUTION TO OVERFISHING? In general terms, the status of wild fish stocks has not improved. By … Continua llegint Farm fishing: the solution to overfishing?
One of the things that really grab our attention in the documentaries are the different forms of courtship in the animal kingdom: the amazing dances of the birds of paradise, the pirouettes of the dolphins… But, how is the courtship in fishes? INTRODUCTION With almost 33,500 species of fish living around the world, it is easy … Continua llegint The courtship in fishes
Some month ago, we talked about starfishes and we said that there are some animals, which are also echinoderms, with which they can be easily confused. Well, in this post we will talk about these animals: the brittle stars. We are going to explain their features to distinguish them from starfishes and we are going to … Continua llegint They look like starfishes, but they aren’t: the brittle stars
It’s probable that you know that most of the fishes that inhabit in the Earth breathe due to the presence of gills. However, this is not the only respiratory system present in fishes. In this post, we will review different types of breathing in fishes. INTRODUCTION The respiratory system of fishes have to be adapted … Continua llegint How do fish breathe?
Since some time ago, newspapers are talking and warning about the arrival of the blowfish in the Mediterranean. This post expects to describe these famous animals and explain which the danger is for humans. HOW IS THE BLOWFISH OF THE MEDITERRANEAN? Blowfishes are a group present in the Mediterranean because they have accessed through the Suez … Continua llegint Warning: Blowfish is already in the Mediterranean!
Summer is the perfect season of the year to go and enjoy the sea and you probably are one of these people who practise snorkel or who dive. In this case, I want to explain which are the main features of starfishes, with which animals can be confused and some examples of the Mediterranean sea. … Continua llegint Starfishes
This week, after the amazing success of the last post, I will change the direction of the article and I will focus on the fishes with bad spines, it is, fishes with venomous spines, but focusing on the Mediterranean species. INTRODUCTION Despite seas and oceans of the planet are inhabited by a high number of potentially … Continua llegint Fishes with bad spines