Cookie use on MRCVSonline
We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive all cookies.
If you would like to forward this story on to a friend, simply fill in the form below and click send.

Your friend's email:
Your email:
Your name:
 
 
Send Cancel

New insights into the physical capabilities of aquatic animals
Humpback whales (pictured) and mackerals had a similar maximum speed when jumping out of the water.

Study finds mackerels and humpback whales jump out of the sea at the same speed

New research led by the University of Roehampton has revealed fresh insights into the physical abilities of aquatic animals.


The study, published in the Journal of Experimental Biology, found that small fish like mackerel jump out of the sea (a behaviour known as ‘breaching’) at the same maximum speed as humpback whales. It also revealed that mullets can match apex predators such as the great white shark.


Researchers say their findings provide vital new information on speed and power concerning an animal's size and could inform further research. 


Study lead professor Lewis Halsey said: “There are general expectations that powerful animals known to hunt, such as orcas or great white sharks, would come out top in terms of maximum speed, but our results disprove this.


“We hope this will form the foundations for further research as we discover more about the maximum energy outputs of different animals and the underlying factors impacting this fundamental measure of an animal’s physical capacity and how they are adapted to their habitats.”

In the study, researchers examined video footage of 14 species of fish and cetaceans spanning in length from 20cm to 14cm. These included the African tetra, basking shark, common bottlenose dolphin and humpback whale.

They found that the maximum breaching speed of fish and cetaceans increases with size until it levels-off with species that are around two meters long. They also noted that the speeds of bigger cetaceans such as orcas and humpback whales do not surpass that of mackerel.


To put this into figures, both mackerels and humpback whales have a similar maximum speed when jumping out of the water (nine metres per second, m/s), and mullets and white sharks are also matched for breaching speed (six m/s), the researchers said.


The team also found that smaller fish delivered higher rates of energy output for their size. For example, the power of a mullet as it thrust through the water surface is about 40 Watts per kilogram of body weight - 10 times more power than shown by the great white shark.

Become a member or log in to add this story to your CPD history

Celebrity chefs urge public to get baking to support Cats Protection fundraiser

News Story 1
 In support of Cats Protection's Pawsome Afternoon Tea fundraiser, Masterchef winner Tim Anderson and Great British Bake Off star Kim-Joy have shared biscuit recipes to help keen bakers raise money for needy cats across April.

The celebrity chefs are both cat owners and have said that they hope this fundraiser will help to raise awareness of cats in need and the importance of adopting a cat, rather than buying one.

This is the fourth year Cats Protection has run its Pawsome Afternoon Tea campaign, which encourages people to hold tea parties, bake sales and fundraising events to help raise money for the charity.

To view the recipes and other fundraising resources please visit the Cats Protection website. 

Click here for more...
News Shorts
BEVA offering free membership to vet students

The British Equine Veterinary Association (BEVA) is offering free membership to veterinary students. As part of a new initiative with the aim of encouraging more veterinary professionals into equine practice.

According to BEVA, less than one in ten veterinary students choose to work in equine practice. The association hopes that this initiative will provide insight into the field and the benefits of a career in equine medicine.

Benefits of membership include:
▪ access to a network of nearly 3,000 members
▪ special student rates to attend BEVA Congress
▪ online access to BEVA's Equine Veterinary Education (EVE) journal
▪ free access to the association's online learning platform
▪ free access to BEVA's practical veterinary apps
▪ exclusive discounts on a range of things from cinema tickets to grocery shopping.

BEVA will be releasing a series of short videos over the next few months from BEVA Council members, explaining what inspired them to work in equine practice.

Image (c) BEVA.