#intertidal spider

Intertidal spiders are playing on hard mode

Yep, that's a spider among seaweed.

Jumping Spider

Photographer Makes Incredible Macro Shots Of Insects And Wildlife Creatures

Photographer: Niki Colemont

Common Stretch Spider

Badumna insignis, and a female in this case. One of the most common spiders around houses, also known as the window spider, and common black spider.

Interestingly, the Desidae family of spiders usually live intertidally, some living inside empty barnacle shells and sealing up the entrance when the tide comes in.

To quote Wiki :

The webs of both B. insignis and B. longinquus are a messy-looking construct of irregular sail-like shapes. There is a funnel-shaped, silken retreat, usually in the middle or corner of the web, where the spider spends most of its time waiting for prey. The female spider never leaves the web unless forced to. They seem quite attached to their location, rarely changing the position of their webs and because of this, old webs can be quite messy, often with small objects or dust stuck in them. At night the spider comes out to repair and add to the web, often just adding new silk over the old.

I'd try not to provoke these spiders, if possible.