Stephen Dalton / Two Water Fleas (Daphnia sp.), showing transparency of bodies and internal organs. UK, September.

Stephen Dalton / Cat flea {Ctenocephalides felis} jumping from cat fur, UK

Stephen Dalton / Cat flea {Ctenocephalides felis} leaping sequence, multiflash image

Kim Taylor / Water flea (Daphnia) trapped in a drop of water on a grass head. UK

Kim Taylor / Dog flea {Ctenocephalides canis} UK.

Kim Taylor / Cat flea {Ctenocephalides felis} amongst cat fur, UK

Nigel Cattlin / Metallic green flea beetle (Altica sp), two walking one behind the other up stem. Berkshire, England, UK. April.

Nigel Cattlin / Metallic green flea beetle (Altica sp), two walking one behind the other up stem. Berkshire, England, UK. April.

Nigel Cattlin / Metallic green flea beetle (Altica sp) walking down stem. Berkshire, England, UK. April.

Nigel Cattlin / Flea beetle (Phyllotreta sp) and feeding damage on Lilacflower (Aubrieta sp). Cultivated in garden, Berkshire, England, UK. April.

Nigel Cattlin / Flea beetle (Phyllotreta nigripes) on Sweet alyssum (Lobularia maritima) leaf. Berkshire, England, UK. August.

Nigel Cattlin / Flea beetle (Phyllotreta nigripes) on Sweet alyssum (Lobularia maritima). Berkshire, England, UK. August.