Rocky reef of the Pacific

Grunt sculpins are unusual fish... They either jump, crawl or hop around the bottom and rarely swim. This species emits a grunt like sound once out of the water.

Unlike most fish sea-horses do not have any scales. They have bony plates under their skin which look (and feel) like a medieval armour! This is the reason why their delicate fins twirl gracefully while moving their rigid bodies.

While courting females, male blue-banded-gobies flash their fully extended dorsal fin. Males will not cease doing this until females give up and lay their eggs.

Algae
Sea grapes (Botryocladia pseudodichotoma - Rhodymeniaceae)

Bony fish
Blackeye goby (Rhinogobiops nicholsii - Gobiidae)

Blue-banded goby (Lythrypnus dalli - Gobiidae)

Grunt sculpin, grunt-fish (Rhamphocottus richardsoni - Rhamphocottidae)

Pot-bellied seahorse, big-belly seahorse (Hippocampus abdominalis - Syngnathidae)