![Coral Reef scene in the Red Sea](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
Coral Reef scene in the Red Sea
Red sea coral reef scene showing clown fish, sea urchins, star puffer fish, brain coral, squirrel fish, sea anenome, and lettuce coral
![Salmon Salmo salar hen](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
Salmon Salmo salar hen
Samon Salmo salar hen fish showing silvery irridescence
![Three-spined stickleback Gasterosteus aculeatus with background weed](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
Three-spined stickleback Gasterosteus aculeatus with background weed
Three-spined stickleback Gasterosteus aculeatus male with background weed
![Seahorse family diagram](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
Seahorse family diagram
Seahorse family diagram showing pipefish, leafy seadragon, and other syngnathidae
![Salmon Salmo salar hen, cock, parr, and smolt stages](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
Salmon Salmo salar hen, cock, parr, and smolt stages
Samon Salmo salar hen, cock, parr, and smolt stages with text
![Brown trout Salmo trutta](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
Brown trout Salmo trutta
Brown trout Salmo trutta from chalk stream (with red spots)
![Eel Anguilla anguilla](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
Eel Anguilla anguilla
Eel Anguilla anguilla swimming with weed and background
![European Rockpool diagram](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
European Rockpool diagram
European Rockpool diagram showing lots of shoreline crustaceans, bivalves, anenomes, and gastropods, sea weeds, and background
![Northern pike Esox lucius with background](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
Northern pike Esox lucius with background
Northern pike Esox lucius lurking with background of weeds
![Electric eel Electrophorus electricus with two cross sections](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
Electric eel Electrophorus electricus with two cross sections
Electric eel Electrophorus electricus; complete animal and longditudinal cross section showing the three electric organs; namely Sach’s, Hunter’s and Main organ. Illustration from “30 Animals that made us smarter” by Patrick Ayree (BBC Books)
![Electric eel Electrophorus electricus](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
Electric eel Electrophorus electricus
Electric eel Electrophorus electricus; complete animal and longditudinal cross section showing the three electric organs; namely Sach’s, Hunter’s and Main organ. Illustration from “30 Animals that made us smarter” by Patrick Ayree (BBC Books)
![Reef Manta ray Manta alfredi](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
Reef Manta ray Manta alfredi
Reef Manta ray Manta alfredi showing two animals swimming with mouths open, filter-feeding. Illustration from “30 Animals that made us smarter” by Patrick Ayree (BBC Books)
![Arapaima with scales Arapaima gigas](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
Arapaima with scales Arapaima gigas
Arapaima with scales Arapaima gigas Illustration from “30 Animals that made us smarter” by Patrick Ayree (BBC Books)
![Arapaima gigas fish](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
Arapaima gigas fish
Arapaima gigas fish showiung its distinctive scales and “etched” head Illustration from “30 Animals that made us smarter” by Patrick Ayree (BBC Books)
![Great White shark Carcharodon carcharias with denticles and skin](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
Great White shark Carcharodon carcharias with denticles and skin
Great White shark Carcharodon carcharias showing denticles and skin, and the Sharklet anti-bacterial material that is has inspired. Illustration from “30 Animals that made us smarter” by Patrick Ayree (BBC Books)
![Atlantic cod Gadus morhua](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
Atlantic cod Gadus morhua
Atlantic cod Gadus morhua with curved tail Illustration from “30 Animals that made us smarter” by Patrick Ayree (BBC Books).
![Trout swimming Salmo](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
Trout swimming Salmo
Trout swimming Salmo trutta seen from above on a sandy river bottom, demonstrating carangiform movement
![Zebra shark Stegostoma fasciatum](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
Zebra shark Stegostoma fasciatum
Zebra shark Stegostoma fasciatum
![Salmon Salmo salar parr](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
Salmon Salmo salar parr
Samon Salmo salar parr with distinctive markings and red dots
![Three-spined stickleback Gasterosteus aculeatus](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
Three-spined stickleback Gasterosteus aculeatus
Three-spined stickleback Gasterosteus aculeatus male
![Striped bass Morone saxatilis](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
Striped bass Morone saxatilis
Striped bass Morone saxatilis
![Stone fish Synanceia verrucosa](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
Stone fish Synanceia verrucosa
Stone fish Synanceia verrucosa camoflauged with its background
![Siamese fighting fish Betta splendens](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
Siamese fighting fish Betta splendens
Siamese fighting fish Betta splendens battling
![Sandtiger shark Carcharias Taurus](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
Sandtiger shark Carcharias Taurus
Sandtiger shark Carcharias Taurus