invertebrates

Home sealife invertebrates
Cuttlefish

Stealthy cuttlefish use electric cloaking

Cuttlefish are renown for their tremendous camouflage capabilities - changing the colour and texture of their skin to match their surroundings. They have another weapon in their hide and seek armoury though - electric cloaking.
Deep sea octopus

Deep sea octopus broods eggs longer than any known animal – 4 years

Deep sea mother octopus looks after eggs for 4 and a half years - breaking records for any animal's brooding period.
Nematostella

Venomous sea creatures change their venom recipe often

Venomous sea creatures often change their venom recipe, adapting the potency and recipe of their venom to suit changing predators and aquatic environments.
Jewel Anenome

Jewels of the Sea grab animals with their 100 ball-tipped tentacles then paralyse them

A myriad of colour patches cover the rock when jewel anemones make it their home. These flower-like animals, up to 2.5 cm (1") across, catch...
Mauve Stinger Jellyfish, Pelagia noctiluca, by Andrew Reay-Robinson

Killer Robots Slash Jellyfish

Korean researchers test jellyfish-killing robots. Jellyfish cause the fishing industry to lose money by breaking fishing nets. They sting swimmers. They block the seawater cooling systems of power plants. In 2009, a ten-ton Japanese trawler capsized after the three man crew tried to haul up a net loaded with jellyfish. But does chopping millions of jellyfish up solve the problems?
octopus intelligence

The most intelligent invertebrate – what can the octopus do?

The octopus is believed to be the most intelligent of all invertebrates. As well as its relatively large brain, each of the octopus' eight...
Cuttlefish and Camouflage

Cuttlefish – Master of Camouflage

What makes the Cuttlefish so good at controlling its colour and blending in with its surroundings? This month scientists at Harvard University and the...
Plumose anemones

Attack of the Clones: Plumose anemone is creature of the month

As Plumose anemones can clone themselves, forests of them appear together. They comprise a tall, smooth column topped with a crown of feathery tentacles. Individuals are usually white or orange. They like areas with currents so tend to live on prominent pieces of wrecks or on rocky pinnacles - good diving areas.
Crustacean

Sex-change crustaceans retain some masculinity

Male crustaceans avoid being completely feminised by pollutant-contaminated seawater as they "lock down" their maleness. New research by scientists at the University of Portsmouth has...
Is it ok to eat squid?

Squid – the prawn cocktail of the 21st century – but is it OK...

Which squid can you eat with a clear conscience?